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Plant Diseases/Questions Answered by Expert Dr Stephen Vann
| Subject | Date Asked |
| schefflera | 2/5/2012 |
| Q: could you tell me what causes the dark brown spots A: Charles: Without looking at these spots under some sort of magnification, I would be guessing. They ... | |
| Monkey puzzle tree | 1/30/2012 |
| Q: I read your reply re the ooze which is indicative of disease. However, the ooze is flowing higher ... A: Lori: The ooze is called slime flux or bacterial wetwood. Check out information on this bacterial ... | |
| Orchid Help(1) | 1/27/2012 |
| Q: see att image. Thank you! A: Alfredo: From your image, I do not see any evidence of a disease or insect from your orchid. In ... | |
| Orchid Help | 1/27/2012 |
| Q: May I know what happen to my encyclia cochleata? I water the plant in the morning and evening(not on ... A: Alfredo: I do not recognize these leaf spots as being a disease. I would suspect some form of ... | |
| Tomato leaves | 1/18/2012 |
| Q: My tomato leaves are kind of shriveled on several plants. Also a brown color is getting on a lot of ... A: Albert: Based on your image, these leaf symptoms are probably the result of a root/soil stress, ... | |
| Italian Cypress turning yellow | 1/16/2012 |
| Q: I have 8 Italian Cypress trees. About 4 months ago one of them slowly turned yellow from the ... A: Ezi: There may be multiple reasons for the yellowing. Difficult to ascertain positively without ... | |
| White growth in soil | 1/10/2012 |
| Q: We noticed our lawngrass(kikuyu) started to recede until at this point few grass is growing and ... A: This growth is a type of fungus living on organic material in the soil. It can be be one of ... | |
| Aloe Vera abnormal leave growth | 1/4/2012 |
| Q: Several months ago I felt strang but did not pay too muvh attention. This morning I saw my aloe ... A: Bright: I see that you were able to attach photos. After seeing your images, I still don't think we ... | |
| Aloe Vera abnormal leave growth | 1/3/2012 |
| Q: Several months ago I felt strang but did not pay too muvh attention. This morning I saw my aloe ... A: Bright: This growth does not sound like a disease nor insect that I am familiar with. Seeing a photo ... | |
| aphids spreading | 12/30/2011 |
| Q: from northeastern pa...my hibiscus plants are 5 years(peach color)and 12+ years(red). I put them ... A: Marian: You may consider trying an insecticidal soap or a material called Malathion. Both products ... | |
| apple tree health | 12/29/2011 |
| Q: I have a 20+ year old apple tree, getting hit hard with borers and sapsucker birds.. Is their a ... A: Nerol: With borers, getting the insecticide/chemical to the pest is the big issue. Any sprays work ... | |
| spiderplants | 12/13/2011 |
| Q: I have a couple of spiderplants in pots, a month or so ago I divided them up then the leaves began ... A: Assuming the root issues have been solved and the plant is getting sufficient light and moisture, ... | |
| tree parasite? | 11/20/2011 |
| Q: I have a deciduous tree (don't know the name - it flowers, then has green leaves in the early spring ... A: Donna: These may be some type of insect. Can you take and send a closeup photo? This will help with ... | |
| oak tree bark fungus | 11/19/2011 |
| Q: I have an Oak tree in Daytona beach Florida aprox 9 years old the trunk is covered in a flat green ... A: Hank: Can you send me a closeup photo? This may help with an accurate ID. Does the tree appear to be ... | |
| Winterizing Flower Beds | 11/17/2011 |
| Q: Dr. Vann, Thank you for taking my question. I live in Kingman, KS (zone 6a). I have lantanas, ... A: Tim: The sheltered area will definitely help take some of the damaging wind and temperatures off ... | |
| Winterizing Flower Beds | 11/17/2011 |
| Q: Dr. Vann, Thank you for taking my question. I live in Kingman, KS (zone 6a). I have lantanas, ... A: Tim: Plant diseases are my best suit, however I did check w/some folks here and they tell me that ... | |
| rose rosette in coreopsis | 11/7/2011 |
| Q: I recently removed 12 rose bushes due to rose rosette. I've also noticed that a couple of nearby ... A: Highly unlikley that your coreopsis has rose rosette virus. These virus agents tend to be quite host ... | |
| black spots on maple tree | 11/4/2011 |
| Q: There are two maple trees in my front yard. the trees turn from green to yellow to red. There ... A: Annette: If the spots appear dark black and are raised on the leaf surface, it may be a leaf disease ... | |
| magnolia tree and disease | 11/3/2011 |
| Q: my small magnolia tree appears to have diseased leaves; the underside has several bits of what looks ... A: Philip: A photo may be helpful for an ID. Try to get as close as you can to make the photo and be ... | |
| Cotton Candy/Wooly fungus or insect webs? | 10/23/2011 |
| Q: One of the shrubs in my yard is being overwhelmed with a thick covering of what looks like white ... A: Dave: No disease here. Your images appear as the waxy deposits(spirals and long strands) of ... | |
| Arborvitae Green Giant | 10/17/2011 |
| Q: I live in NE GA and last spring had 9 Green Giants planted along property line. They are gowing ... A: Jann: It would be best if someone could examine a physical sample. Sometimes interior leaves get ... | |
| fungus | 10/16/2011 |
| Q: I just discovered a yellow fungus about six feet up on a silver maple. I have four large wild cherry ... A: Thisstructure may represent the fruiting body of a fungus that may be causing a decay that is on the ... | |
| Oak Tree Spores | 10/15/2011 |
| Q: Dr. Vann, I have a large oak tree in my yard with hundreds of small holes in the bark. What is ... A: Bryan: If these holes (approx. 1/4 inch diameter)are on the main trunk and seem to be arranged ... | |
| Arizona Ash issue | 10/13/2011 |
| Q: I have a question about my Arizona Ash. It is a younger tree, approximately 10 year old. I Live in ... A: From your photo and description, this tree may be in trouble. The bark cracks with associated ... | |
| tree | 10/13/2011 |
| Q: what kills pine beetles,,,,,,,,,,,i live in ala A: There are several types of beetles that can attack pine. If you are referring to the tiny pine bark ... | |
| Weeping Willow tree | 10/12/2011 |
| Q: I have a 7-yr old weeping willow tree that has red spikey patches all over it. I found a similar ... A: I have not seen these structures associated with borers or any other insects on weeping willow. To ... | |
| Ficus Tree | 10/1/2011 |
| Q: We live in San Diego and have a beautiful outside 20+ foot tall Ficus Benjamina Tree. It usually ... A: If the yellow leaves are occuring over most of the tree, this is usually a sign of a root/soil ... | |
| Cycad fronds turning yellow. | 9/25/2011 |
| Q: Can you please help. We have 2 huge cycads (they are approx. 13 years old) growing in large pots ... A: Sharon: From your description, I do not suspect an infectious plant disease but rather an ... | |
| Diseased Crepe Myrtle | 9/18/2011 |
| Q: I live Northwest of Houston in Tomball. My crepe myrtle is 2 years old that I have watched grow ... A: Joyce: From your description, sounds like your leaves may have a deposit of honeydew on them. This ... | |
| maple tree tar spot | 9/9/2011 |
| Q: I have a small maple that i have grown since about 6 inches tall and is now maybe 10 feet tall. ... A: Connie: yes, you can do this. Removing the spotted leaves from the tree ( if feasible/practical) in ... | |
| Euonymus Plant Disease | 9/8/2011 |
| Q: Dr. Vann, I have 4 euonymus plants fully grown on my property in Long Island, New York. They are ... A: Dave: From your description, sounds as if these 4 may be succumbing. These symptoms may indicate a ... | |
| Storm damaged Maple tree | 9/7/2011 |
| Q: During a recent rainstorm in NJ, a branch section of a very large and extremely tall maple broke ... A: Katherine: Based on your inquiry and photo, I agree. This tree is a great candidate for firewood! ... | |
| Chanticleer Pear | 9/6/2011 |
| Q: I have a Chanticleer Pear tree that is about 30 feet tall. Last year I noticed that part of the very ... A: Scott: You may consider getting someone to visit your tree "in person". Contact your local county ... | |
| Chanticleer Pear | 9/2/2011 |
| Q: I have a Chanticleer Pear tree that is about 30 feet tall. Last year I noticed that part of the very ... A: Scott: The symptoms that you describe does not indeed sound like fire blight nor any other ... | |
| Dogwood Tree Leaves are firing | 9/1/2011 |
| Q: Vann, I have another problem with another of my dogwoods. This one is approx. 4" in diameter. ... A: Fred: The damage has already been done, however I would expect recovery, especially if your tree has ... | |
| Dogwood Tree Leaves are firing | 9/1/2011 |
| Q: Vann, I have another problem with another of my dogwoods. This one is approx. 4" in diameter. ... A: Fred: From your photo, it appears as if the edges (margins) of the leaves are browning. If this is ... | |
| apple | 8/26/2011 |
| Q: my most of apple fruits suffers from rusting,why it happens and what is its permanent remedy. A: Vivek: Are you referring to the infectious disease called cedar-apple rust? This is the only thing ... | |
| white lilac planted one yr ago | 8/25/2011 |
| Q: My lilac bush(5 Gal) was planted one yr ago. It bloomed profusely the first time this spring. ... A: Bonnie: A root bound situation can be stressful. This is best corrected at planting time. ... | |
| black soot on pecan tree leaves | 8/24/2011 |
| Q: I recently bought a pecan tree andplanted it 900 metres up in the Lebanese mountains in full sun, ... A: The "sooty" stuff sounds like sooty mold. Very common on pecans. Don't park your car under a tree ... | |
| 2nd sago image | 8/22/2011 |
| Q: Here is the 2nd image that you can see some of the pot and stones I spoke of. Thanks again - Ken ... A: Ken: Not too cool was referenced to the fact that the stones should not be glued to the plant ... | |
| Maple Tree Fungus/Fungi Killer? | 8/22/2011 |
| Q: I have a large maple tree in my yard. It has an open knot hole approx. 3" in diameter. There is a ... A: Fred: Ideally, the best time to prune is during the dormant season, however on an ... | |
| Maple Tree Fungus/Fungi Killer? | 8/22/2011 |
| Q: I have a large maple tree in my yard. It has an open knot hole approx. 3" in diameter. There is a ... A: Fred: More trouble than its worth. At this point it will not make a difference. The decay is ... | |
| Yellow Poplar tree scales | 8/20/2011 |
| Q: What should I treat the earth around my trees to taken up into the trees to kill the scales? I ... A: Walter: Check out a product called BAYER ADVANCED GARDEN TREE AND SHRUB INSECT CONTROL. It comes in ... | |
| Maple Tree Fungus/Fungi Killer? | 8/20/2011 |
| Q: I have a large maple tree in my yard. It has an open knot hole approx. 3" in diameter. There is a ... A: Fred: No. This white fungus probably represents the fruiting body of a fungus that may be causing an ... | |
| 2nd sago image | 8/20/2011 |
| Q: Here is the 2nd image that you can see some of the pot and stones I spoke of. Thanks again - Ken A: Ken: I suspect that the stones were placed in such a manner for looks and support. If they are ... | |
| Another sago palm question | 8/20/2011 |
| Q: After reviewing previous questions and replies I haven't found any specific answer to what I am ... A: Ken: From you photo, I do not recognize this "growth" as being a specific disease nor insect ... | |
| bugs- ??? | 8/18/2011 |
| Q: I have a balcony planter with several of the large flowering tobacco plants, large green leaves, ... A: Jim: Can you send me a photo of these critters? It is near impossible to give you an accurate ID w/o ... | |
| grapevine | 8/14/2011 |
| Q: my grapevine which is in a large pot and is around 10 years old has severely puckered leaves like a ... A: Jacqui: The leaf puckering can be caused by several things. Sometimes plants may get accidentally ... | |
| willow tree fungus? | 8/13/2011 |
| Q: Can you tell me what this is. Its only on the leaves and its little reddish yellow pimples. A: Janell: These "pimples" are called "willow acne". No, just kidding!!! What a lame joke for Monday ... | |
| weeping mulberry tree | 8/13/2011 |
| Q: We have had the above tree for about 3 years now and it has been doing very well. However, recently ... A: Wilma: Usually, leafspots alone don't have a significant impact on an established tree. Make sure ... | |
| Autumn blaze maples | 8/12/2011 |
| Q: I have two Autumn blaze maples that were planted around 3 yrs ago and they have never turned to the ... A: Nancy: Temperatures can influence the color, particularly how cool it gets during the fall. ... | |
| Pine trees | 8/12/2011 |
| Q: Mr. Vann I have these pine trees, not sure what kind they are. They are all about 10' diameter and ... A: Difficult to say without examining them in person. You may consider contacting your local county ... | |
| sick tree | 8/11/2011 |
| Q: I have been looking at a sick Hackberry that I can't determine what's wrong with it. I think it's a ... A: Suzie: I am unable to tell much from your photo. Often it is difficult to make an accurate diagnosis ... | |
| Crype Myrtle Tree - yellow/sticky leaves | 7/31/2011 |
| Q: I have two lavender oclored Crype Myrtle trees on my parkway in Houston, TX. They are a little over ... A: Bob: Sticky leaves are usually a sign of "honeydew" which is insect "poop" on which sooty mold ... | |
| Mimosa tree problems | 7/30/2011 |
| Q: My Mimosa has been full and beautiful for about 10 or so years. All of a sudden, the top is dryed ... A: Dee Dee: This tree, unfortunately is quite susceptible to a wilt disease called Fusarium Wilt. No ... | |
| White Spots on Tulip Tree | 7/30/2011 |
| Q: I read a post here about the tulip tree spots thinking it sounded similar but I don't have the ... A: Teresa: These spots on your photo resemble lichens, harmless growths that we see common on trees. ... | |
| Weeping Pussy Willow Crown | 7/28/2011 |
| Q: We recently purchased property with a weeping pussy willow, about 6' tall. This spring the tree ... A: Lynn: Thanks for your photo, but unfortunately I did not see any good clues here. You may wish to ... | |
| Weeping Pussy Willow Crown | 7/28/2011 |
| Q: We recently purchased property with a weeping pussy willow, about 6' tall. This spring the tree ... A: Could be several things. Check the bases of the dying branches. Look for any apparent physical ... | |
| fruiting mulberry trees | 7/27/2011 |
| Q: .we planted a fruiting mulberry tree last August(2010) It seemed to be doing fine. I was concerned ... A: Norma: Removing the dead portions should not impact the overall health of the tree. The browning of ... | |
| emerald green arborvitae (smaragd) problem | 7/26/2011 |
| Q: I purchased and planted 25 one gallon size, emerald green arborvitae shrubs, the first week in April ... A: Lydia: Your description does not sound like a bonafide contagious disease. I suppose there might be ... | |
| Arborvitae disease/insect problem | 7/26/2011 |
| Q: Dr. Vann, I moved into my house two years ago and have a row of (what I believe to be) Arborvitae ... A: Christine: These are the immature fruit w/seed. This is arborvitae. No problem here. Keep a lookout ... | |
| chinese pistache in trouble! | 7/24/2011 |
| Q: Our chinese pistache is about 5 years old and suddenly the bark is falling off the trunk and I ... A: Margie: The bark on pistache does become "flaky" as the tree ages. This might be interpreted as ... | |
| Squash | 7/20/2011 |
| Q: I planted summer squash and butternut squash this year. Other than growing slowly, as compared with ... A: Jerry: Suggest having a soil test done. Ck in with your local county ag Extension office about this. ... | |
| Bark damage to Red Blaze Maple Tree | 7/18/2011 |
| Q: We have a Red Blaze Maple tree approx. 5 years now, still appears to be doing great, but last year ... A: Sandra: That is fine. You can send a photo when you have access to a camera. Be sure to reference ... | |
| hydrangea tree | 7/18/2011 |
| Q: Until about 2 weeks ago, all 3 of my hydrangea trees were doing well and are now flowering. All of ... A: Elizabeth: Looking at the soil around the root zone can be a clue. Use a small spade to dig down a ... | |
| hydrangea tree | 7/18/2011 |
| Q: Until about 2 weeks ago, all 3 of my hydrangea trees were doing well and are now flowering. All of ... A: Elizabeth: The soap should be safe if it was mixed and applied properly. Could the soil be dry? Not ... | |
| Gardenias | 7/18/2011 |
| Q: The developing flower buds fall off the gardenia plant before flowering. A: Ruben: These symptoms do not sound like a bona-fide contagious disease. One possibility is the ... | |
| sweet chestnut | 7/13/2011 |
| Q: I am trying to find out why a mature sweet chestnut has developed reduced leaf growth over the last ... A: Moby: Unfortunately, your image was not attached to your message. You may wish to try again. The ... | |
| Chinese Pistachio Stress | 7/11/2011 |
| Q: We are having a problem with one of two Chinese Pistachio trees in our front yard (south side of ... A: Nancy: Another email address to use: svann@uaex.edu Please put Chinese pistachio in the subject ... | |
| rose of sharon disease | 7/11/2011 |
| Q: Dr. Steve, My 9 year old rose of sharon tree has blue green moss like areas on the entire trunk and ... A: This growth may be lichens. These are "leaf-like" gray green growths. These and our garden variety ... | |
| problems with my honeysuckle trumpet vines | 7/10/2011 |
| Q: I have two honeysuckle trumpet vines that I have on trellises on my clothes line poles. They were ... A: Diane: From your description, sounds like you have some insects feeding on your plant.They are more ... | |
| Tulip Tree w/ White Spots on Branches | 7/9/2011 |
| Q: I have a Tulip Tree that has white round fuzzy spots all over the branches and trunk of the tree. ... A: Theresa: Control the insect that is causing it. Best to get an ID first. You can locate the insect ... | |
| chitapla | 7/9/2011 |
| Q: have a black fungus or pest on leaves,looks like little black dots on leaves,giving off a resin ... A: Charles: Can you send me a photo of these dots? Try to get as close as you can and be sure that your ... | |
| Thuja trees | 7/8/2011 |
| Q: I bought 4 Thuja trees about a month ago. I followed the directions and planted them accordingly. ... A: Mike: From your description, these may be symptoms of a root related stress, rather than a bona ... | |
| Tulip Tree w/ White Spots on Branches | 7/7/2011 |
| Q: I have a Tulip Tree that has white round fuzzy spots all over the branches and trunk of the tree. ... A: Theresa: If these spots are "leaf-like". or even flat, they may be lichens. Use you computer to ... | |
| Chinese Pistachio Stress | 7/6/2011 |
| Q: We are having a problem with one of two Chinese Pistachio trees in our front yard (south side of ... A: I am unable to see much detail in your photo, but does the sap flow seem to originate at the ... | |
| black spots on sunset maple | 7/6/2011 |
| Q: I planted an 8 foot sunset maple in July last year and most of the leaves turned red, shrivelled up ... A: Sounds like your maple has been through some stressful times. Premature leaf coloration and ... | |
| Norfork Pine | 7/5/2011 |
| Q: We have an office plant about 3 feet tall that is a Norfork Pine. It has changed offices this last ... A: Sharon: From your description, this doesn't sound like a bona fide infectious (contagious) disease, ... | |
| Bark damage to Red Blaze Maple Tree | 7/2/2011 |
| Q: We have a Red Blaze Maple tree approx. 5 years now, still appears to be doing great, but last year ... A: Sandra: Loss of bark may indicate a wound followed by the initation of decay, a slow, yet ... | |
| deodar cedar | 6/30/2011 |
| Q: I have a very large and wide deodar cedar in my yard. I do not know exact age, but the house was ... A: Colleen: I do not suspect a disease based on your description. You may take a look at the branches ... | |
| Chinese Pistache Tree Question | 6/29/2011 |
| Q: Good morning, Dr. Vann. Thank you for be willing to answer my question. A branch on my young seven ... A: Tim: Ouch! $60.00 huh. It is very important to protect the bark of the tree, especially at the ... | |
| Chinese Pistache Tree Question | 6/29/2011 |
| Q: Good morning, Dr. Vann. Thank you for be willing to answer my question. A branch on my young seven ... A: Tim: I see what you mean. I am concerned how strong the "connection" will be long term. There is ... | |
| Chinese Pistache Tree Question | 6/29/2011 |
| Q: Good morning, Dr. Vann. Thank you for be willing to answer my question. A branch on my young seven ... A: Tim: Trying to "repair" the break may be more trouble than it is worth. The affected area may ... | |
| aristocrar pare tree | 6/28/2011 |
| Q: I have a mature subject tree that has some branches at the upper level where the leaves are ... A: Don: From your description, this may be a common disease that we see here in my part of the world ... | |
| Apple | 6/27/2011 |
| Q: How to treat apple trees affected with root rot disease due to heavy rain. A: Vivek: There are commercially available fungicides that can be applied to the soil, but they are ... | |
| red leaf maple disease | 6/26/2011 |
| Q: Just noticed the bark splitting and releasing from around the tree, and is covered with a white ... A: Jim: The bark splitting has probably allowed the entry of microorganisms into the the tree interior ... | |
| Shademaster Locust in Toronto | 6/25/2011 |
| Q: I appreciate your help in identifying the problem with our 20 year old Shademaster Locust. This year ... A: Kevin: These "leafy" grayish green things are lichens. These are not plant disease agents. Often ... | |
| Phlox and other plants have white foam | 6/24/2011 |
| Q: We are only in our 2nd season at our new home and wondering if the soil has some disease. My phlox ... A: Yvonne: Thank You for your response. As I mentioned some types of weed killers can cause plant ... | |
| Phlox and other plants have white foam | 6/24/2011 |
| Q: We are only in our 2nd season at our new home and wondering if the soil has some disease. My phlox ... A: Yvonne: Thanks for the photo. It is a bit out of focus, but I don't think that the foam is related ... | |
| willow tree problems | 6/23/2011 |
| Q: my grandma has a willow tree in her yard, she noticed some a white substances coming from the tree ... A: Layla: The yellow bellied sap sucker is a type of woodpecker. We have them here in Arkansas. They ... | |
| Maple Trees | 6/23/2011 |
| Q: I have 2 maple trees for long time.The bark is coming off & all you see is tree roots ... A: Bark falling off of a tree can be a sign of decline. If there are a lot of dead/dying branches in ... | |
| Phlox and other plants have white foam | 6/23/2011 |
| Q: We are only in our 2nd season at our new home and wondering if the soil has some disease. My phlox ... A: Yvonne: 82 sounds very nice right now to me. It has been 96-98 this entire week with a humidity of ... | |
| Phlox and other plants have white foam | 6/23/2011 |
| Q: We are only in our 2nd season at our new home and wondering if the soil has some disease. My phlox ... A: Yvonne: Hope your weather is cooler and wetter than we are here in Arkansas right now! Does this ... | |
| Fruitless mulberry tree problems | 6/22/2011 |
| Q: We live in Arizona at about 4500 feet elevation and have two 35+ year old fruitless mulberry trees. ... A: Roberta: It is difficult to make an assessment w/o seeing your tree in person. One of the trees ... | |
| crabapple with fire-blight | 6/21/2011 |
| Q: I have a much beloved crab in the middle of our small garden, and for the past four years it has had ... A: Jane: Good to have you back! Must have been sitting at your computer this morning early. Removing ... | |
| crabapple with fire-blight | 6/20/2011 |
| Q: I have a much beloved crab in the middle of our small garden, and for the past four years it has had ... A: We have FB here also. It is very common on our ornamental ("Bradford") pears. Unfortunately, this ... | |
| Sago Palm | 6/18/2011 |
| Q: The new growth on two Sago Palms appears to have turned yellow overnight! What can be done and what ... A: Art: This yellowing growth may indicate several things. Difficult to say w/o seeing the plant. ... | |
| Red Maple | 6/17/2011 |
| Q: I have a 10-15 yr old Red Maple thet has no leaves on it. I do not know when all the leaves fell ... A: Diane: Sounds as if the maple may have died some time back. Can you send a photo of these white ... | |
| plum tree disease | 6/16/2011 |
| Q: We have two plum trees. A Stanley and a Toka. The Toka plum tree has small greenish egg like ... A: Katie: Best that someone sees your tree in person. The eggs may be from a beneficial insect rather ... | |
| autumn blaze maple | 6/15/2011 |
| Q: We bought an autumn blaze maple last year and it has done good until recently. I noticed there is a ... A: The splitting has probably created a wound through which microorganisms can enter plus the wound may ... | |
| white cocoons on undersides of hollies | 6/14/2011 |
| Q: I recently read a question by another person concerning the same dark powder (almost black) on the ... A: Roxanne: Can you take and send a closeup photo of some of these white cocoons on the leaves? It is ... | |
| outdoor plants | 6/13/2011 |
| Q: all my plants are loosing their green leaves, they just fall off keeping the pants alive but bare, ... A: Mary If all of your outdoor plants are losing leaves, I do suspect a bona fife contagious disease, ... | |
| Psocids | 6/12/2011 |
| Q: Vann, I have a Gumbo Limbo and one of the branches show Psocids activity. How can I treat it? ... A: Richard: It is my understand that no treatment is required in your particular case, they will just ... | |
| Yellow leaves on lemon tree | 6/11/2011 |
| Q: I live in south of Spain and in my small back yard have a lemon tree which was fine since last 5 ... A: Nijka: This is a rather significant area as seen in your photo. Please re-read my earlier ... | |
| Yellow leaves on lemon tree | 6/10/2011 |
| Q: I live in south of Spain and in my small back yard have a lemon tree which was fine since last 5 ... A: Nijka: When the bark becomes loose and falls from the tree, this indeed may be an indication of ... | |
| Orchid Help | 6/9/2011 |
| Q: I've repotted my Antelope Dendrobium with new charcoal as I suspected it has rhizome ... A: Alfredo: Nothing characteristic from this particular leaf photo, other than there is a possible root ... | |
| AfricanSumac | 6/7/2011 |
| Q: Planted a 5 gal African Sumac 3 years ago and it grew very good and have 4 branches from the bottom ... A: Bob: As I visualize this, sounds like your plant has developed a type of dieback in which the upper ... | |
| Brown Spots on Hydrangea | 6/7/2011 |
| Q: i am sending some pictures of this hydrangea. other than the brown spots some leaves have been ... A: Lee: Not all spots are created equal. Take a look at Cercospora Leaf spot in this bulletin that I ... | |
| unknown plant disease on tree | 6/7/2011 |
| Q: i have a hawthorn tree in my yard. i live in Edmonton Alberta, and its zone 3b, but its also ... A: Marisa: Cool photo! This does look like a type of leaf gall. There are thousands of these out ... | |
| Brown Spots on Hydrangea | 6/6/2011 |
| Q: i am sending some pictures of this hydrangea. other than the brown spots some leaves have been ... A: Lee: From your image, I do not recognize any particular infectious disease here. The appearance and ... | |
| Decay inside maple tree | 6/6/2011 |
| Q: Recently I had storm damage to a maple tree. The winds split the tree down the middle exposing what ... A: Trish: I would also suspect some level of internal decay in that tree (nearest the house)as well. ... | |
| Decay inside maple tree | 6/6/2011 |
| Q: Recently I had storm damage to a maple tree. The winds split the tree down the middle exposing what ... A: More than likely the scenario goes something like this. Sometime ago (maybe years) there was an ... | |
| Holly | 6/5/2011 |
| Q: Dr. Vann, I recently purchased a couple of holly bushes ( yellow variety). The leaves are turning ... A: Belinda: If you have an appreciable amount of sand in the soil, more often irrigations required than ... | |
| Pink colouring on my Lemon Thym | 6/5/2011 |
| Q: I'm wondering if you can help me. I recently bought assorted thymes to plant around my back garden. ... A: Trefor: This coloration does not look like an insect nor a disease, but probably a response to an ... | |
| Pink colouring on my Lemon Thym | 6/5/2011 |
| Q: I'm wondering if you can help me. I recently bought assorted thymes to plant around my back garden. ... A: Trevor: Can you send along a closeup photo of this pink stuff? It maybe an insect issue, but best ... | |
| dying western yew | 6/4/2011 |
| Q: In my yard, which is located in NJ, resides a western yew tree. The leaves are turning yellow, which ... A: Michael: Using "Google Images" look up sapsucker damage and see if this looks like the holes. These ... | |
| plumcot problem | 6/3/2011 |
| Q: The fruit on my plumcot have several holes with a clear liquid oozing out. The liquid hardens ... A: This clear resin-like material is plant material. It is a plant response to a wound being made- ... | |
| Armillaria Root Rot | 6/3/2011 |
| Q: Just received lab results that my Podocarpus hedge has Armillaria Root Rot and I am in Zone 9b. I ... A: Daniel: Armillaria has a very large host range. Sometimes called "the shoestring fungus". Finding a ... | |
| Hydrangea | 6/3/2011 |
| Q: I live in western NC and for the past 4 years I have had this problem on just the leaves. It blooms ... A: Lee: Hydrangea can have an annoying leaf spot that we can see often in the summertime. It is usually ... | |
| purple leaf sand cherry | 6/1/2011 |
| Q: what is wrong with my purple leaf sandy cherry? it looks like it's "scorched". A: Teresa: Your photo is a bit too out of focus to see clearly. Are the twigs dying back from the ends? ... | |
| Double Althea | 6/1/2011 |
| Q: I have an 8 year old double pink althea that was growing and flowering well for the last 7 years. ... A: Debbie: May wait a little longer. Examine the base of the plant- look for any physical damage where ... | |
| tar spot on maple tree | 6/1/2011 |
| Q: The answer to my last question tells me my maple has tar spot. Will the leaves that fall with the ... A: Judy: The sexual spores(ascospores) that are produced in the spring are infectious. Rake up/destroy ... | |
| dieback of ferns on oak | 5/31/2011 |
| Q: I have a very old oak tree that has ferns on most of the limbs--no worry. Now, they are not ... A: Tommie: Not sure what the story is here. If the ferns are drying up and turning crispy despite the ... | |
| White wool | 5/30/2011 |
| Q: I have a small gumbo-limbo tree around 4 yr old. I noticed one of its branches is now covered with a ... A: Rick: Your description sounds like this stuff maybe insect related. Best to get an accurate ID ... | |
| Holly bushes | 5/26/2011 |
| Q: I have four large holly bushes that have been in front of my home for 7 years. This year I noticed ... A: Spider webs should not have an impact on the health of the hollies. The spiders are probably there ... | |
| willow tree looks scraggly | 5/23/2011 |
| Q: I have a weeping willow that is around 12 years old and at least 35 feet high. This year the ... A: It is difficult to impossible to diagnose your issue w/o seeing the tree in person. Here are some ... | |
| conifers | 5/22/2011 |
| Q: I have a row of conifers at the back of the house and a few have brown patches on them. Also have ... A: Andrew: Many things can cause brown areas to develop with the canopy of conifers. It could be ... | |
| crape myrtle | 5/21/2011 |
| Q: I have a crape myrtle that is 3 years old and about 8 feet in height. I have never had a problem ... A: John: This growth does not sound like a disease, but merely a phenomena of growth. Sometime when ... | |
| trees | 5/20/2011 |
| Q: 2 fruitless Mulberry in Joshua Tree CA @ 3000' elevation. Leaves @ ends healthy and large in 1 to 2' ... A: Ernesto: It will be important to determine what insect is munching on the leaves before an ... | |
| Peach tree disease? | 5/19/2011 |
| Q: i have 4 holly trees (2 male 2 female) all within 10 feet of each other, inter twined and well ... A: It is best to get your two problems properly identified before taking any course of action. There ... | |
| holly tree | 5/19/2011 |
| Q: i have 4 holly trees (2 male 2 female) all within 10 feet of each other, inter twined and well ... A: John: I do not suspect an infectious disease based on your description. There may be some soil ... | |
| botrytis on tulips | 5/19/2011 |
| Q: I have an area (about 10x5 feet) of tulips. Zone 6, wet springs. All three years that i plant them ... A: Alla: I am to assume that someone has examined your plants and determined Botrytis was present and ... | |
| Chinese Pistachio Tree wilted/brown leaves= dead? | 5/18/2011 |
| Q: I have what I believe to be two Chinese Pistachio trees in my front yard. One of the two put out ... A: Sharon: The twig test is quite good, however after checking numerous twigs that turn out brown, it ... | |
| problems with growing wildflowers from seeds | 5/16/2011 |
| Q: I have planted wildflower seeds in trays.They come up but then stop growing maybe reaching a height ... A: Jane: You did not mention if you are loosing any plants. Be sure the soil drains well. Overly wet ... | |
| Schefflera diseases | 5/12/2011 |
| Q: I have a mature schefflera that I'm moving outside as the weather is warmer. I noticed a few of the ... A: Gregg: The sticky/clear material sounds like "honeydew". Honeydew is the sugary excrement(poop)of ... | |
| Aphids on my althea trees, hibiscus ornamental tree, and on my gardenia bushes | 5/12/2011 |
| Q: I can't seem to get rid of the aphids on my althea tree, gardenia bushes, and my ornamental hibiscus ... A: You may wish to focus on just the insect side of things. Often the combination products like you ... | |
| Weeping Willow bark separation | 5/10/2011 |
| Q: We have a weeping willow that is approx. 4 years old (in northern MN). This year it has a massive ... A: Becky: This separation may be due to a cold injury event. The ants are taking advantage of this ... | |
| moss? | 5/8/2011 |
| Q: I have 6 flowering plum, they are 10 years old. the trunks have been turning yellow with what looks ... A: Glad you are joining us from afar! These growths may be lichens, a complex growth that is actually a ... | |
| Japenese Maple | 5/4/2011 |
| Q: I have a red coral bark japanese maple that was planted last year. It is in full sun. Recently, I ... A: Wonderful trees! The brownish black discoloration can be an indication of one of two things. There ... | |
| trees | 5/4/2011 |
| Q: 2 fruitless Mulberry in Joshua Tree CA @ 3000' elevation. Leaves @ ends healthy and large in 1 to 2' ... A: Ernesto: Mites can be extremely small (<0.5 mm), so be sure nothing is there. Again, it may be best ... | |
| Garden ants | 5/3/2011 |
| Q: Last year I had my garden overtaken by ants..tons of ants. I would pull a carrot and 50+ ants would ... A: Shawna: It would be best to get your ants identified first and try to determine where they may be ... | |
| Euonymus Chicago Fire has flies?? | 5/3/2011 |
| Q: I got last fall, it is about 30" tall now. Anyway, today I noticed almost all the branches have a ... A: Claire: These may be winged aphids. Best to confirm the identity first, since aphids can be a pest. ... | |
| Common holly | 5/1/2011 |
| Q: Hello I have a common Holly tree in my back garden and for several weeks on certain parts of the ... A: John: Is the resin coming from the leaf or is is possible to be dripping from a plant above? Can you ... | |
| leave fungus | 4/30/2011 |
| Q: i was wondering if you could try and help me with a fungus problem i have with my Stemmadenia ... A: Brian: Without being able to look at the growth under a microscope, I would be guessing. You really ... | |
| Canadian Hemlock | 4/29/2011 |
| Q: I planted a few Canadian Hemlocks last summer, I have one tree that is turning brown on the bottom, ... A: Steve: This may be evidence of transplant shock. This is that adjustment a tree goes through getting ... | |
| Wilting Lilac Bush | 4/29/2011 |
| Q: This morning when I let my dogs out I noticed how many buds where on one of my Lilac's. About an Hr. ... A: Cherilyn: Like you, I am at a loss to what could cause this to happen in just a short time. Give ... | |
| weaping cherry disease | 4/28/2011 |
| Q: My Dwarf weeping Cherry tree is oozing a thick sap like liquid from the trunk. Last year it started ... A: Good Morning. The thick sap-like ooze is the trees' response to a wound in the bark/wood. Often the ... | |
| Slightly drooping leaves on Chinese Pistache tree | 4/27/2011 |
| Q: I planted a 6 foot Chinese Pistache tree a couple of weeks ago. It seems to be doing pretty well. ... A: Tim: It is probably a bit too soon to tell if the cut root is responsible for the leaf yellowing. ... | |
| pear trees - knotty pears? | 4/26/2011 |
| Q: Last late summer/fall, they produced many pears. They were very sweet and tasty, except the pears ... A: The symptoms that you describe on your pears may be a virus disease called pear stoney pit virus. ... | |
| Slightly drooping leaves on Chinese Pistache tree | 4/25/2011 |
| Q: I planted a 6 foot Chinese Pistache tree a couple of weeks ago. It seems to be doing pretty well. ... A: Tim: It should grow out of this, especially if the tree "catches on" in a timely manner and the ... | |
| trees | 4/25/2011 |
| Q: 2 fruitless Mulberry in Joshua Tree CA @ 3000' elevation. Leaves @ ends healthy and large in 1 to 2' ... A: Ernesto: There may be a tiny insect or mite in those tiny bunched leaves that is not readily visible ... | |
| Slightly drooping leaves on Chinese Pistache tree | 4/25/2011 |
| Q: I planted a 6 foot Chinese Pistache tree a couple of weeks ago. It seems to be doing pretty well. ... A: Tim: The drooping leaves/stems may be an indication of root stress, often a complication or result ... | |
| Large Spots on Oak Trees | 4/24/2011 |
| Q: Good Afternoon~ In the last few days I have noticed large white spots appearing on the trunks of my ... A: Brandy: This may be a condition called "smooth patch". Google this for some images to compare. ... | |
| Curling Disease | 4/23/2011 |
| Q: I have been having a yearly problem with my Fruit Salad tree (peach, apricot,& santa rosa plum ... A: Vic: This looks like a fungus disease called peach leaf curl (great picture!!). It is caused by a ... | |
| Oak tree fungus | 4/22/2011 |
| Q: I have 2 large Interior valley Oak trees in my yard that developed a white powdery fungus on all the ... A: Can you send a photo of the white powdery stuff? This may be an insect or even a disease. Seeing ... | |
| Golden euonymus disease | 4/21/2011 |
| Q: We have a golden euonymus plant and there are white and black bumps all over the leaves and ... A: Breanna: These are scale insects- probably tea scale. The infestation looks heavy. In my part of ... | |
| vinca minor dieback | 4/20/2011 |
| Q: we have had beautiful vinca minor covering large parts of of our front yard for at least 20 years ... A: Rita: This could be a fungus disease called branch and stem rot. It is very common here in ... | |
| Hydrangea's | 4/18/2011 |
| Q: I have 2 hydrangea's.We live in Ga.. Every year something starts eating on the leaves. I would like ... A: The spots in your photo may be an indication of a plant disease rather than something literally ... | |
| White lumps on grapevine? | 4/17/2011 |
| Q: I have recently noticed many pea-sized white lumps on the branch of my grapevine. They appear to be ... A: These "bumps" may be a type of insect such as an aphid or scale insect. You are welcome to send me a ... | |
| golden euonymus disease | 4/15/2011 |
| Q: can I use a sulfur base fungicide on this plant? Also how about on garden phlox? Do hydragea get ... A: Cheryl: Sulfur based products can be used on a wide variety of plants and is recommended for ... | |
| camilla leaf disease | 4/10/2011 |
| Q: My camilla is growing but each year for past several springs a black cover appears on leaves--looks ... A: Marion: Using a wet paper towel, see if the black stuff will wipe off a black leaf or two. If so, ... | |
| Ginko bark & Pear Tree | 4/9/2011 |
| Q: My Ginko tree had a split in the bark last year that appeared bright red....that has healed over and ... A: Cold temperatures followed by intense sunlight on the bark of some thin barked trees can cause ... | |
| Hoya Obscura Care(3) | 4/7/2011 |
| Q: Sir, Your advice please. @@@@@IMAGE:77142:Plant-Diseases-715/2011/04/Hoya_7.jpg##### ANSWER: ... A: Alfredo: I suppose it is possible, but I do not usually see these types of symptoms associated with ... | |
| palm plant fungus?? | 4/6/2011 |
| Q: i have an outdoor palmplant. its leaves are turning all brown, with white spots on the leaves, some ... A: Jennifer: Thanks for your photo! I do not recognize any type of insect nor disease organism from ... | |
| Weeping Cherry Tree | 4/5/2011 |
| Q: My 5 yr old cherry tree had some white marks on the trunk last year and is now seeping large amounts ... A: Carol: This "sap" or resin-like material is formed in response to a wound made in the bark. It is a ... | |
| Fruitless Mulberry trees | 4/4/2011 |
| Q: I have three very large fruitless mulberry trees. I noticed in February that the bark was peeling ... A: Jay: This may indicate some level of decay that is going on inside the tree, especially if it is an ... | |
| Weeping willow | 4/3/2011 |
| Q: I have a minicher weaping willow which up untill last year was doing and looking great but last ... A: The ants are usually not the problem, they are the result of something else. Perhaps they are ... | |
| Aspidistra turning brown & yellow | 4/3/2011 |
| Q: I have a (formerly thick an beautiful) large aspidistra sitting in front of a north window (full ... A: Good to hear the roots looked OK. You might want to check them at the present time to see if they ... | |
| Aspidistra turning brown & yellow | 4/2/2011 |
| Q: I have a (formerly thick an beautiful) large aspidistra sitting in front of a north window (full ... A: These plants do best in shade. Any direct sun can injure the leaves. I do not suspect an infectious ... | |
| bumps on Plum Tree | 4/1/2011 |
| Q: I have a young Plum Tree, maybe 3 years old, At the base there are about three bumps, but when they ... A: Shelly: The larger raised bumps appear as normal woody callus tissue as mentioned earlier. They do ... | |
| bumps on Plum Tree | 4/1/2011 |
| Q: I have a young Plum Tree, maybe 3 years old, At the base there are about three bumps, but when they ... A: These bumps may be just callus tissue formed in response to an early injury (the tree's response to ... | |
| Holly fungus or insects | 3/30/2011 |
| Q: I saw the earlier question for a holly bush with a possible fungus or insect infestation - white ... A: Sherry: Hi. Your leaves have scale insects on the underneath side. These "nasty" critters make ... | |
| Redtip Tree | 3/30/2011 |
| Q: My Tree has turned brown on one side can you give me an solution A: Elizabeth: I am assuming that you are referring to the Redtip Photinia, a shrub that can can get ... | |
| palm plant fungus?? | 3/27/2011 |
| Q: i have an outdoor palmplant. its leaves are turning all brown, with white spots on the leaves, some ... A: Jennifer: If the leaves are browning over most of the plant and have occurred fairly rapidly, then ... | |
| baby crepe myrtle | 3/26/2011 |
| Q: I grew a baby crepe from seed in nov this past year it was doing beautiful about 3 -4 in high it ... A: Linda: The yellowing and subsequent leaf drop are evidences of a root malfunction. This can be ... | |
| ORANGE TREE NEEDS HELP | 3/25/2011 |
| Q: WHAT'S WRONG WITH MY ORANGE TREE AND HOW DO I FIX IT? MY ORANGE TREE APPEARS TO BE DYING. ALL THE ... A: Amber: difficult to tell w/o seeing the tree. Check the trunk for loose or damaged bark. Look for ... | |
| Pittosporum White growth | 3/25/2011 |
| Q: I have 1 year old pittosporum, probably 2-3 tall. For the last 7-8 months I have noticed a white ... A: Katlin: These look like scale insects. Can be nasty, especially if there are a bunch of them. If ... | |
| Drake Elm Budding | 3/24/2011 |
| Q: I have several young Drake Elms (planted 2 yrs ago) and they all have budded out. One of them has ... A: Jerry: I am not quite sure of the smaller leaves on a branch. Take a look at that particular ... | |
| Pittosporum White growth | 3/24/2011 |
| Q: I have 1 year old pittosporum, probably 2-3 tall. For the last 7-8 months I have noticed a white ... A: Katlin: The foamy consistency may indicate an insect called a "spittlebug". Resembles a small glob ... | |
| Pittosporum White growth | 3/24/2011 |
| Q: I have 1 year old pittosporum, probably 2-3 tall. For the last 7-8 months I have noticed a white ... A: Is the growth have a cottony(fuzzy) or a foamy consistency? Does it appear to be affecting the ... | |
| Maple autumn blaze | 3/23/2011 |
| Q: We just bought a house in november in Amarillo texas... We have these 'twigs' for trees in our front ... A: Sabra: Using your fingernail, gently scratch a few stems to remove the outer bark in a small area. ... | |
| Bare spots in bark on mimosa tree. | 3/20/2011 |
| Q: I live in the Ft. Worth,TX area and have a large mimosa tree which has developed bare spots in the ... A: Melvin: The bare spots that you describe- are these areas with no branching? I am not sure what you ... | |
| yellowing of lemon tree leaves | 3/17/2011 |
| Q: i am living in Punjab state in India, my lemon tree's leaves are developing yellow spots and in very ... A: Monika: Thanks for the information. I feel that the leaf "blotches" are not related to a contagious ... | |
| yellowing of lemon tree leaves | 3/16/2011 |
| Q: i am living in Punjab state in India, my lemon tree's leaves are developing yellow spots and in very ... A: Based on your photo, the brown areas do not appear as an infectious plant disease that may be caused ... | |
| meyer lemon tree | 3/14/2011 |
| Q: I have a Meyer Lemon tree -about 5 years old. It has lumpy growth on its branches. It still bears ... A: Sonal: Great to hear from a reader so far away! From your description, I don't think the lumps ... | |
| holly bushes | 3/13/2011 |
| Q: Holly bushes have a white fungus on all the bottoms of the leaves looks like baby powder. what do ... A: This indeed may be a fungus OR it may be an insect infestation. Best to see a picture of this white ... | |
| Arborvitae emerald greens with gaping holes | 3/12/2011 |
| Q: We had 20 of the emerald greens planted in our front yard to create a barrier against the traffic ... A: Can you send a photo showing a part of this line of arborvitae? Include a photo of maybe two trees ... | |
| Sick pine tree | 2/28/2011 |
| Q: My father has a gnarly little pine in his yard that serves a focal point at the front of his house. ... A: I apologize for the delay in answering. Several things may be an issue causing the gradual decline. ... | |
| Strange fungus | 2/22/2011 |
| Q: Vann, I hope you are able to identify the thing in the attached photograph. The green moss is fine, ... A: Louise: I am not sure myself of the identity. This could even be an algae of sorts. It would ... | |
| African Violet Help(3) | 2/21/2011 |
| Q: Pls see att. image. A: Alfredo: This photo is suggestive of water and/or temperature damage, rather than something ... | |
| African Violet Help(1) | 2/21/2011 |
| Q: My African Violet growing reasonably well till last week when I discovered some rapid browning on ... A: Alfredo: These foliar brown areas may be many things. AF can be "picky" about where they do best. ... | |
| Yukka tree diseases | 2/18/2011 |
| Q: Like Brian whose letter I have read, my Yukka tree has suffered from the snow and excessive cold ... A: From your description, sounds like the plant may indeed be in a terminal condition. The ooze may be ... | |
| Dead stalks or what appears to look like dead stalks | 2/17/2011 |
| Q: I had 2 beautful robbelinis that I left too long in the pots from nusery. One had 4 stalks 2 are ... A: Patricia: You can remove the dead portions, but be very sure they are dead first. I would almost be ... | |
| Green onions formed orange bumps | 2/14/2011 |
| Q: Dr. Vann, I live in Hawaii and grow 2 bunches of green onions in a container. My family and I cut ... A: Sean: Rust is usually easily ID'd. There are several fungal organisms that produce rust on various ... | |
| Green onions formed orange bumps | 2/13/2011 |
| Q: Dr. Vann, I live in Hawaii and grow 2 bunches of green onions in a container. My family and I cut ... A: Can you send along a photo of these bumps? Do the plants seem to show any decline or are the bumps ... | |
| Orchid Help(1) | 2/12/2011 |
| Q: I found some black spots and yellowing on my orchid. Is it fungal infection? I would mist the ... A: Alfredo: This does not resemble a fungus infection to me, however orchids are susceptible to a ... | |
| Peace Lily Help(1) | 2/10/2011 |
| Q: My Peace Lily, of which I've grown for about 6 months is experiencing yellowing & browning of ... A: Alfredo: Did you have the opportunity to check the condition of the root system? You can certainly ... | |
| Peace Lily Help(1) | 2/9/2011 |
| Q: My Peace Lily, of which I've grown for about 6 months is experiencing yellowing & browning of ... A: Alfredo: You are correct, overwatering is one of the most common problems for houseplants. ... | |
| Tulip Poplar Trees and Scales | 2/1/2011 |
| Q: I live in Kingman, Kansas, which is in South Central Kansas (hardiness zone 6a). I am very ... A: Timothy: Good idea to shelter against the wind. Since the bark may be thin on younge trees, you may ... | |
| Tulip Poplar Trees and Scales | 2/1/2011 |
| Q: I live in Kingman, Kansas, which is in South Central Kansas (hardiness zone 6a). I am very ... A: Timothy: I would not expect there being an issue with using the bald cypress as mulch. No more than ... | |
| Tulip Poplar Trees and Scales | 1/31/2011 |
| Q: I live in Kingman, Kansas, which is in South Central Kansas (hardiness zone 6a). I am very ... A: Timothy: Thanks for your inquiry. This tree is a beautiful tree. I would be more concerned about ... | |
| Gardenia Help | 1/30/2011 |
| Q: Your advice please. A: Alfredo: I do not think the spots are contagious, but do watch for spread to other leaves. The ... | |
| Lemon tree-tan lemons | 1/30/2011 |
| Q: I found "tan" lemons on my tree, meyer lemon, in No Calif, full of lots of good lemons higher on the ... A: Elizabeth: Consider collecting 2-3 representative "bad" lemons and carry them by one of your local ... | |
| ligustrum - wax leaf privet | 1/29/2011 |
| Q: vann- we have a line of tall wax leaf privet in our yard that are becoming sparse. i'm not sure if ... A: Frances: These are quite hardy plants. For some good advise you can contact the local county ... | |
| Yucca tree disease | 1/26/2011 |
| Q: Good evening Dr. Vann, We have had a terrible start to winter here in England, with snow and severe ... A: William: Thanks for the photo. From your description, I suspect cold temperatures may have created ... | |
| Photo of Product(Front) | 1/25/2011 |
| Q: I followed the instructions and misted the plant. The liquid fungicide can be used directly. I used ... A: Alfredo: I am sorry, but I am not familiar with this product being used for managing plant diseases. ... | |
| Balsam Plant Help(2) | 1/24/2011 |
| Q: Sir, Your advice please. @@@@@IMAGE:71257:Plant-Diseases-715/2011/01/Balsam-Plant_2.jpg##### ... A: Alfredo: The powdery mildew area should appear as fuzzy white or gray patches. The fuzz can be see ... | |
| White Birch tree with 1 foot white worms | 1/24/2011 |
| Q: I am looking at a 12 skinny inch white worm or snake dangling from my birch tree seems to like the ... A: Fran: I would need to have a photo of this animal to give you an idea. I am assuming you meant it ... | |
| Yukka tree disease | 1/23/2011 |
| Q: Good evening Dr. Vann, We have had a terrible start to winter here in England, with snow and severe ... A: William: Are you referring to a Yucca? Can you send a photo of this area that you are concerned ... | |
| Balsam Plant Help(1) | 1/22/2011 |
| Q: I found some funny patches on my balsam plant leaves which I suspect to be fungal infection. I've ... A: Alfredo: The symptom on this leaf does not resemble a fungus infection. If is something that we may ... | |
| pachira plant pests | 1/21/2011 |
| Q: My problem: I've noticed that the leaves of my Pachira plant are being eaten - I suspect earwigs or ... A: Milton: Sorry if I was confusing. I was wondering if you have seen any new damage that would ... | |
| pachira plant pests | 1/21/2011 |
| Q: My problem: I've noticed that the leaves of my Pachira plant are being eaten - I suspect earwigs or ... A: Milton: This area shown in your image does not resemble an animal bite to me. The eaten areas are ... | |
| pachira plant pests | 1/21/2011 |
| Q: My problem: I've noticed that the leaves of my Pachira plant are being eaten - I suspect earwigs or ... A: Milton: Earwigs are not commonly considered a pest of living plants, but more of a consumer of ... | |
| trees | 1/17/2011 |
| Q: i have about 20 green ash trees that the horses have crewed some of the bark off ,some pretty bad. i ... A: Doug: To my knowledge, there is nothing that can be applied to a wound like this and correct or stop ... | |
| Jasmine Help | 1/14/2011 |
| Q: Some of my jasmine buds are browning and dropping. Could it be due to fungal attacks? I live in ... A: Alfredo: If fungal in origin, the condition usually worsens and spreads from one plant to another. ... | |
| Plant Help | 1/14/2011 |
| Q: May I know what is the visible difference btwn fungal/bacterial attacks and bona fide injury(eg. ... A: Alfredo: You are correct, the two can be confusing and symptoms my overlap. To be sure, a lab test ... | |
| Pesticides in plants | 1/10/2011 |
| Q: I love eating vegetables but recently have been disturbed by the thought that many of the pesticides ... A: I am not the best person for your question. I do know that there is a lot of testing done to ... | |
| white mushrooms under blue oak trees | 12/1/2010 |
| Q: I am having a heavy infestation of white mushrooms under my 2 blue oak trees. Is this a sign of the ... A: Mattie: Difficult to say if they are causing a problem for the tree without determining the ... | |
| Japenese Red Maple Tree | 11/29/2010 |
| Q: I have a little red bug that is eating the bark from my tree and the tree is dying. What is this and ... A: Marlene: I am afraid that insects are my short coming, but I do have an office mate who might be ... | |
| Cactus | 11/25/2010 |
| Q: I have an ornamental cactus (no name on plant when purchased) about 3ft high. The pot is 8 in. in ... A: Jim: From your image, this area of the plant looks like a potential bacterial issue, especially if ... | |
| Desert Rose Help | 11/20/2010 |
| Q: My desert rose bloomed recently. The first flower was fine but the second one was distorted. The ... A: Couple of possibilities. (1) Thrips. These a very small (1-1.5mm), slender, and very fast moving ... | |
| White fungus on Sour Orange Trees-What is it? | 11/19/2010 |
| Q: I recently planted (about a year ago) sour orange trees to make a hedge. I noticed recently (soon as ... A: Jeremy: If it is "fuzzy" there is a remote chance it could be a fungus called powdery mildew, ... | |
| Disease - Blue Colorado Spruce | 11/18/2010 |
| Q: Our Fat Albert seems to be attack by a disease or insect at the very top... The new growth last ... A: Paule: It could be either an insect or a disease within the top portion of the stem tip. Difficult ... | |
| White fungus on Sour Orange Trees-What is it? | 11/18/2010 |
| Q: I recently planted (about a year ago) sour orange trees to make a hedge. I noticed recently (soon as ... A: Jeremy: Does this coating look "fuzzy" or waxy like? Has the tree been sprayed with anything? Do all ... | |
| Cobwebbing Insect Killing Indoor Lilac | 11/17/2010 |
| Q: I have an Everblooming Lilac bush I brought inside for the winter. I no sooner brought it in and ... A: It will be best to get a positive ID in order to select and use the best method of control. Spider ... | |
| mullberry tree fruitles | 11/17/2010 |
| Q: I have 2 10 year old mulberry trees that have developed over the past 5 years a black colored on the ... A: Cesar: Your description sounds much like a condition called sooty mold. This is a group of fungal ... | |
| Cleveland pear tree wth limp branches | 11/14/2010 |
| Q: My eight year old cleveland pear tree has about one-third limp branches. The leaves, other branches, ... A: Ed: I am not aware of a particular disease/insect that may cause this. Has the tree done this ... | |
| sick peace lily | 11/13/2010 |
| Q: I've had a peace lily on my back porch for about 2 years. This morning, I was cutting dead leaves ... A: Jennifer: There are several different looking scale insects. I usually see those that are about 1-2 ... | |
| crepe myrtles | 11/11/2010 |
| Q: I have one crepe myrtle alone at the end of my walk. The leaves turned solid black but it seems to ... A: Rick: This description sounds like a condition called "sooty mold". It is not a disease, but a ... | |
| white moss/fluff | 11/11/2010 |
| Q: I've notice a tree in our yard has this white, fluff type moss looking stuff on the bottom of ... A: Karli: I would be suspicious of this being a waxy exudate of an insect - possibly a wooly aphid or ... | |
| Fungal Infection | 11/10/2010 |
| Q: Is there fungal infection on my fuchsia leaves? More and more lower leaves seem to get affected. ... A: Alfredo: I still would consider avoiding the mist on the foliage- just water the soil. Water may ... | |
| Fungal Infection | 11/10/2010 |
| Q: Is there fungal infection on my fuchsia leaves? More and more lower leaves seem to get affected. A: Alfredo: I do not recognize this spot as a fungus. It could be a bacterial issue. Does the yellow ... | |
| Web coming out of trees | 11/9/2010 |
| Q: We have an Oak tree and a maple tree in our front yard. This morning I noticed tiny web like ... A: I expect these strings to be associated with insects that are residing in the trees that are using ... | |
| pecan tree | 11/8/2010 |
| Q: I have three pecans trees in my yard, and every one of them has rotten pecans, do you have any ... A: Dianne: Pecan trees are notorious for producing great for a few years then have an off year or two. ... | |
| Gardenia Leaf | 11/8/2010 |
| Q: Several leaves(especially the lower few) of my gardenia are yellowing. Is it due to chlorosis? ... A: Alfredo: I'd first take a look at the roots if they have been in the same container for a year. ... | |
| treatment for scale? | 11/7/2010 |
| Q: Vann, I have attached a picture of holly leaves with spots. Could you tell me if this Scale? And if ... A: Chrissy: Difficult to say if this is scale or perhaps aphids or mealybugs. The oils can be good, but ... | |
| Birch Tree Problem | 11/5/2010 |
| Q: I have a Whitespire birch tree that is about 16 years old and I just notice that one of the three ... A: Michael: This may be an indication of some level of decay within the interior. This decay is often ... | |
| Orchid Help | 11/4/2010 |
| Q: I found some black patches on my orchid leaves. Is this fungal infection? Would it go away with the ... A: Alfredo: That could be a possibility. Next time you mist, see if water tends to remain in that area ... | |
| Orchid Help | 11/4/2010 |
| Q: I found some black patches on my orchid leaves. Is this fungal infection? Would it go away with the ... A: From your image I do not recognize these "blotches" as an infectious disease, but rather a cosmetic ... | |
| quacking aspen disease | 11/4/2010 |
| Q: I have several aspens that I believe are quacking aspens. One of the mature trees has a trunk that ... A: Ramona: Does the tree seem to be affected by the black trunk? For example, has it lost its leaves ... | |
| Pls help my Wrightia Religiosia | 11/3/2010 |
| Q: Why are the young leaves turning black? Too much/too little sunlight? This has happened for several ... A: Alfredo: I wouldn't expect sun to damage the edge of the leaves, but in this business I have learned ... | |
| Pls help my Wrightia Religiosia | 11/3/2010 |
| Q: Why are the young leaves turning black? Too much/too little sunlight? This has happened for several ... A: Alfredo: This does not look like a bona fide infectious disease issue, but rather an injury, ... | |
| Plant Help | 11/3/2010 |
| Q: There are some discolouraions/greyish patches on the young leaves of my balsam plant and Mirabilis ... A: Alfredo: If you are fertilizing the plant through the leaves, it could cause an injury from the ... | |
| Plant Help | 11/3/2010 |
| Q: There are some discolouraions/greyish patches on the young leaves of my balsam plant and Mirabilis ... A: Alfredo: I do not recognize any familiar disease from your balsam leaf. The leaf area looks somewhat ... | |
| red maple bush | 11/2/2010 |
| Q: I planted a Japanese red maple bush and the leaves are turning a white/gray color. what can this be? ... A: Can you send me a photo of a few of these leaves for me to get a better idea of their appearance? ... | |
| New Oak/Elm tree stress | 11/1/2010 |
| Q: I recently planted 12 Laurel Oak, Live Oak and Drake Elms. The Laurels and Drake seem to be ... A: Mike: It can be a struggle for the larger trees to acclimate anytime they are being placed in a new ... | |
| What is this growing underneath jacaranda tree? | 11/1/2010 |
| Q: I found this root like plant underneath the topsoil about an inch or two (not very deep) located ... A: Sharon: You've got me stumped on your question. I'm not sure what to tell you. Since these plants ... | |
| shrub diease | 11/1/2010 |
| Q: my eyuonmus shrub has white specs on the back side of it leaves and on its branches also the leaves ... A: Susan: If these specs can be removed with your fingernail and they appear as somewhat elognated and ... | |
| What is this growing underneath jacaranda tree? | 11/1/2010 |
| Q: I found this root like plant underneath the topsoil about an inch or two (not very deep) located ... A: These look like the small tubers that are normally found on the roots of the asparagus fern. They ... | |
| yellow leaves on holly tree | 10/31/2010 |
| Q: I have yellow leaves on my holly tree (Nellie) in SC Hilton Head A: Yellow leaves on an established ornamental/tree usually indicates a soil/root issue, especially if ... | |
| Fungus on Hibiscus | 10/30/2010 |
| Q: I have a little bit over 50 pots in a 400 sqft sunroom. The pots occupy 1/3 of the room and are a ... A: Ashley: I suspect that the fungus is just after the withering flowers. The blooms usually just last ... | |
| House plant spots | 10/30/2010 |
| Q: I have a indoor corn plant (not Yucca) that was moved about 5 feet to the left of the direct light ... A: Can you send me a photo of a leaf with these spots? This will give me a better idea as to what they ... | |
| Fungus on Hibiscus | 10/29/2010 |
| Q: I have a little bit over 50 pots in a 400 sqft sunroom. The pots occupy 1/3 of the room and are a ... A: Ashley: Does the fungus develop on blooms after they have been open OR does it develop on blooms ... | |
| jade plant disease? | 10/28/2010 |
| Q: I have a 3 foot tall 30 year old jade plant. Recently it has been getting sticky leaves on the sun ... A: Susan: Based on your description, the sticky leaves may be an indication of the presence of ... | |
| Crepe Myrtle Caterpillar's | 10/28/2010 |
| Q: We have crepe myrtle trees in our back yard in Cocoa, Fl. that are over a year old. Yesterday, we ... A: John: Your description may fit a "saddleback" catepillar. Use your computer to "Google" images of ... | |
| spots on leaves of dwarf pear tree | 10/27/2010 |
| Q: i have a dwarf pear tree in my yard and for 2 years now the leaves develop spots on them, they look ... A: Anthony: Thanks for your question. The truth is that many microorganisms can cause leaf spots. ... | |
| two growths in yard | 10/27/2010 |
| Q: i live in Maryland. its been damp an rainy here lately. i live in a trailer. in my front yard around ... A: Some mushrooms can seem to appear "almost overnight" in the yard or flower bed. They usually grow ... | |
| parasite | 10/26/2010 |
| Q: what is this white cocoon? and how do I kill it? A: Aime: This looks like an insect called a scale insect. They make their living by sucking the plant ... | |
| green knobs filled with small larva | 10/25/2010 |
| Q: Since the leaves are falling, I've recently discovered these small green knobs on the dead-leaf ... A: Livie: You did not say what your plant was, so I will guess, based on your description that these ... | |
| Dieffenbachia Tree | 10/25/2010 |
| Q: I left my house one morning and one of my outdoor cats inadvertently got trapped inside the house. ... A: When I first saw your message, I thought you were going to say that your kitty ate the ... | |
| fruitless mulberry tree | 10/23/2010 |
| Q: I have a 10 year. old tree. I live in Nevada. just this year the leaves came out large and very ... A: Paul: I am not sure what type of tree you are describing, but the bark splitting with discolored ... | |
| buddha citrus problem | 10/21/2010 |
| Q: question 1: i got a small buddha citrus (about 2 fts) a year ago, it has been doing well but about 3 ... A: Min: No rush on the pruning job. Give it a month or two, then you can carefully cut the dead stuff ... | |
| buddha citrus problem | 10/21/2010 |
| Q: question 1: i got a small buddha citrus (about 2 fts) a year ago, it has been doing well but about 3 ... A: Min: #1 I suspect that the tree went through some period of stress, but it may be on the rebound ... | |
| house plant disease | 10/20/2010 |
| Q: I have a house plant that has suddenly developed red spots on some of the newer leaves. They are not ... A: This plant is a schefflera. I have one in my home also. From what I can see, these spots do not ... | |
| lemon tree health | 10/19/2010 |
| Q: what is the black soot-like substance covering my lemon tree leaves and how do I cure it? thanks1 A: James: This is probably sooty mold, which is a fungus that develops and grows on the sugary ... | |
| Tomato disease? | 10/19/2010 |
| Q: Lately I've been noticing these spots and streaks on my tomato seedlings which sort of appears ... A: Daniel: Can you send me a closeup photo of these spots and streaks? This will help me to understand ... | |
| dying rhododendron | 10/17/2010 |
| Q: We have an old rhodi, 0ver 25 yrs old, that seems to be dying. We had an extremely hot, dry summer ... A: Diana: I'd start out by a deep and refreshing drink. It has been hot here too! If it has a random ... | |
| weeping mulberry tree | 10/16/2010 |
| Q: i have two established (3 years old) weeping mulberry trees in my landscape. one looks great and is ... A: In my part of the world, this tree is prone to a fungus leafspot called Cercospora Leaf spot. The ... | |
| Avocado Plant | 10/15/2010 |
| Q: I began growing an avocado pit in a jar of water two months ago on my living room counter and it has ... A: Mollett: I suspect that these "swimmers" are various microorganisms like nematodes or protozoans. ... | |
| sky pencil | 10/14/2010 |
| Q: We have repeatedly planted sky pencils in the same spot and all have died. We planted 2 more about ... A: Jan: Difficult to say w/o seeing your plant. There may be a soil environment related issue rather ... | |
| Apple | 10/14/2010 |
| Q: Does fallen apple fruits work as fertilizer for the orchard when rotten or it spread disease on ... A: The nutritional contribution of fallen/rotten apples is negligible, whereas fallen apples can ... | |
| Dead looking leaves on Lilac Bush in NC | 10/13/2010 |
| Q: I planted a new medium sized Lilac Bush in Hickory NC in June. Later all the leaves turned a ... A: BJ: Some ornamentals can get sunburned, especially if the leaves had previously developed under low ... | |
| Grape vine disease? | 10/12/2010 |
| Q: I have just moved into this house that has some very old grape vines growing. The leaves all have ... A: Based on your description, these "bumps" may be a type of insect structure. The insect may be a type ... | |
| Fruitless Mulberry Trees | 10/12/2010 |
| Q: I have approx. 20 Fruitless Mulberry trees planted in our yard. A couple of the trees, especially ... A: Janet: I think there may have been a mistake w/ the photo sent. The image sent appears to be that of ... | |
| schefflera | 10/12/2010 |
| Q: I originally rescued my dwarf schefflera from the local grocery store and now, over 10 years later, ... A: Your photo looks like leaf buds that are somewhat bleached. Again, doesn't look to me like a pest. I ... | |
| plum tree | 10/10/2010 |
| Q: i have a plum tree and ive notice tht from the base to about 2.5 up the tree the outside of the bark ... A: David: If the green stuff looks "fuzzy or leafy-like, it may be a growth of lichens. These are ... | |
| schefflera | 10/9/2010 |
| Q: I originally rescued my dwarf schefflera from the local grocery store and now, over 10 years later, ... A: Whitney: This growth does not sound like a health issue. Can you send a photo of this growth? It may ... | |
| Boston Fern | 10/8/2010 |
| Q: My Boston fern was beautiful and very large it has since started to loose fons and it seems like ... A: I bet you live in Boston right? Just kidding!! Being root bound is indeed a good possibility that ... | |
| tanglefoot product | 10/7/2010 |
| Q: Steve. If you have a preference versus the tanglefoot product. I would be interested. Also, The ... A: David: Not sure how well any of these products work for a bird issue. You may check on the internet ... | |
| chinese pistache disease | 10/6/2010 |
| Q: I live in the dallas area. The tree as subject is a male, about 5 years in ground. Yesterday I ... A: Henry: Thanks for the information. We have that bird in our area also. We have a few folks each year ... | |
| fungus on oak tree | 10/5/2010 |
| Q: I live in Florida. We have an old oak tree. I have noticed an orange colored organism or fungus on ... A: Good to hear from folks in Florida! I lived in Ft. Myers for about 6 years. Loved the weather and ... | |
| Oak Tree spores | 10/5/2010 |
| Q: My neighbor has an Oak Tree. This summer, I am troubled with black spots, about the size of a pin ... A: Deborah: If these "spots" are perfectly round and flat and are about the size you describe, then ... | |
| pear tree disease | 10/4/2010 |
| Q: I have a pear tree that has black spots over many leaves. Both upper and under sides are affected. ... A: Howard: Leaf spots can be caused by many things, some pathogenic and some not. Can you perhaps send ... | |
| Peeling bark on dwarf lemon | 10/3/2010 |
| Q: I have a 44 year old dwarf Myer lemon tree that is in a clay pot. It gets full sun (Los Angeles ... A: Lisa: The bark splitting may be due to the swelling of the trunk. Sometimes extended wetness may ... | |
| Apple plants | 10/3/2010 |
| Q: Is it necessary to pick the rotten apples from the orchard after the harvest. A: Vikek: If it is practical and feasible, yes. This is a great way to minimize plant diseases that may ... | |
| My lemon tree | 10/2/2010 |
| Q: I have my lemon tree which I've planted about eight month ago. I was growing fine. Since that time ... A: Jim: I do not see any evidence of insect nor disease from the three images sent. Examine the folded ... | |
| Peeling bark on dwarf lemon | 10/2/2010 |
| Q: I have a 44 year old dwarf Myer lemon tree that is in a clay pot. It gets full sun (Los Angeles ... A: Lisa: This area of the trunk where the diameter of the tree changes is probably where the original ... | |
| maple tree | 10/1/2010 |
| Q: I have a large maple tree that has a collection of the little, I call them whirly birds or ... A: Thomas: The helicopters are the seed with a "wind" attached. This type of seed is called a samara. ... | |
| Pine tree disease | 9/29/2010 |
| Q: I have more than 20 mature pine trees in the front and back yard. Recently, one tree got completely ... A: Swati: There could be several reasons why this may be happening. Things like dry weather conditions ... | |
| maple tress | 9/28/2010 |
| Q: My maples(I don't know what kind) have white spots and some larger black spots on their leaves. The ... A: Sounds like your trees have a rainbow of spots on it! Difficult to say for sure w/o seeing how ... | |
| Vanderwof Pine disease? | 9/25/2010 |
| Q: I have several Vanderwolf Pine planted 6 months ago average 7-10' tall. All are doing well except ... A: David: If this whitish substance looks like a crusty/powdery material that appears to look like a ... | |
| chinese pistache disease | 9/25/2010 |
| Q: I live in the dallas area. The tree as subject is a male, about 5 years in ground. Yesterday I ... A: Henry: These objects may be a type of scale insect based on your description. Best to get a ... | |
| Rose of Sharon | 9/22/2010 |
| Q: I have 4 Rose of Sharon and they have done beautifully until this year. The blossoms wouldn't open ... A: Bonnie: Doesn't sound like a disease to me either. A couple of things to consider checking out. Take ... | |
| scale | 9/19/2010 |
| Q: we have scale on our euyonomous bushes (we did use dormant spray in the spring). What can we do to ... A: Elaiine: This insect may be the worst insect pest on euonymous. I had it on mine too! You may even ... | |
| dying eugineas | 9/17/2010 |
| Q: I also have dying eugineas, I tried to trim the dead parts off and the more dried up leaves and dead ... A: Becky: There may be some underlying problem here. Possibly a root/soil related stress of sorts. ... | |
| red tips | 9/17/2010 |
| Q: several of my red tips had a fungus at the beginning of the spring....I used fungicide on them and ... A: Barbara: I was being a bit sarcastic about pruning it to the ground. I did not mean this as a ... | |
| KOREAN DOGWOOD | 9/17/2010 |
| Q: SHORTLY AFTER THE TREE BLOOMS MANY OF THE LEAVES TURN BROWN AT THEIR TIPS. THE BROWN PROGRESSES UP ... A: Alfred: The dogwood is typically a shallow rooted tree, thus it can be sensitive to dry soil ... | |
| red tips | 9/17/2010 |
| Q: several of my red tips had a fungus at the beginning of the spring....I used fungicide on them and ... A: Barbara: Oh yes, I know this one well! In our part of the world, this is the most important disease ... | |
| Cypress Trees Turning Yellow-Italian Cypress | 9/15/2010 |
| Q: We live in Northern California. There were 10 cypress trees in a row, in the south side of the ... A: Mary: Italian cypress do not require much soil moisture as do the bald cypress. The Italian type ... | |
| Cypress Trees Turning Yellow | 9/14/2010 |
| Q: We live in Northern California. There were 10 cypress trees in a row, in the south side of the ... A: Mary: If these are bald cypress (Taxodium distinctum) trees, they are commonly found along an area ... | |
| chinese pistache | 9/14/2010 |
| Q: I have six 19 month old chinese pistache trees in my front yard. Their first summer they bloomed and ... A: From your description, it sounds as if these trees have established themselves in your landscape. ... | |
| pecan tree diseases | 9/14/2010 |
| Q: We have 2 paper shell pecan trees which are about 6 yrs. old and I've noticed the bark peeling away ... A: James: Can you send me a photo of this area? Take a few shots, pick the best, review it on your ... | |
| White bumps on Japanese Maple Bark | 9/13/2010 |
| Q: I found white bumps on the bark and some limbs of an otherwise healthy Japanese Maple. When I ... A: Leigh: Thanks so much for the image. This is an insect called a wax scale. We see these common on ... | |
| tree spots | 9/13/2010 |
| Q: I have an oak that has the brown fuzzy spots all over it...what can I do and is this going to kill ... A: Where are these fuzzy spots located- leaves, bark etc? Are they flat or rounded? If you could send ... | |
| Japanese Red Maple disease | 9/12/2010 |
| Q: My tree has small white bumps on the branches. What is it and how do I treat this disease so that I ... A: Mary Lou: Difficult to say without seeing some of these bumps. Can you take a send a closeup photo? ... | |
| Tree Fungus | 9/11/2010 |
| Q: Twice a day for the past five plus years I go past, I think, a Maple tree. In late spring 2009 I ... A: Hey Ralph: A photo may help with the ID. There are many of these fungi that are associated with ... | |
| Crepe Myrtle Disease | 9/10/2010 |
| Q: My crepe myrtle tree is very old and has always bloomed beautifully. This year though, it has a ... A: The mimosa may have had a disease called Fusarium wilt. This tree is quite prone to this fatal ... | |
| Weeping willow bugs | 9/10/2010 |
| Q: There are tiny black bugs (when killed turns purple) all over my weeping willow tree. Do you know ... A: Ken: Are you able to determine if they are harming your tree or just a nuisance? Can you send a ... | |
| scale | 9/9/2010 |
| Q: Four mature holly bushes were planted in a row in front of the house. One died. it had scale. The ... A: Dorothy: It depends on what type of scale insect that you have. Some scales prefer plants that are ... | |
| Japanese Maple | 9/7/2010 |
| Q: I planted my tree 2 week ago. All the leaves on the end of the branches are dying. I did not ... A: Lee: The first few weeks are crucial as the new tree gets use to its new surroundings. Water is ... | |
| bugs in tree leaves | 9/6/2010 |
| Q: we live in montana and have just noticed there are small black bugs in the leaves of our willow ... A: Edna: I would say that it is probably too late to do much good by spraying now. I would collect a ... | |
| Fruitless Mulberry Tree | 9/5/2010 |
| Q: We have 2 Fruitless Mulberry trees that have on their branches what appears to be a large web that ... A: Robin: If the web is out near the ends of the branches, it is probably fall webworm. If the web is ... | |
| webworm/caterpillars | 9/5/2010 |
| Q: My neighbor has what I believe to be webworm in her trees. Both trees totally covered in web sacks. ... A: These critters can have 2-3 generations per year in my part of the world. The caterpillars leave the ... | |
| lilac disease | 9/5/2010 |
| Q: I have two lilacs about five-seven years old with leaves that have gradually turned yellow through ... A: Sally: Leaf yellowing may be a fertility or other root/soil related issue. Consider a soil test to ... | |
| Bradford pear infestation | 9/5/2010 |
| Q: Bark is easily pulled off. Small yellow spots under park. Ants seem to be feeding on them Bark ... A: @aol.com: This area may represent some level of internal decay that can be caused by a variety of ... | |
| webworm/caterpillars | 9/5/2010 |
| Q: My neighbor has what I believe to be webworm in her trees. Both trees totally covered in web sacks. ... A: Billie: Many people confuse the fall webworm with the tent caterpillar. Sounds like you have the ... | |
| Grapefruit tree | 9/4/2010 |
| Q: I have a grapefruit tree that is oozing a tannish colored "foam" from some of the branches. The ... A: Kathy: If the substance appears "frothy" and smells like it is fermenting and often attracks ... | |
| mimosa tree | 9/4/2010 |
| Q: The bark is coming off of my tree near the base in the crotch. I assume this is not normal, and am ... A: Peggy: From the looks of the stem, there is some level of rot/decay present inside. This is a ... | |
| fungus growth at base of bottle brush tree | 9/4/2010 |
| Q: There is a very hard, whitish growth of fungus type substance at the bottom of my 4 yr. old bottle ... A: This hard fungus that you describe may be an indication of a disease that is going on that is ... | |
| lemon tree | 9/3/2010 |
| Q: We have a lemon tree that is probably 20 + years old, has produced fruit all year but we just notice ... A: Patt: This may be a fungus disease, especially if it has been rainy where you live or a possible ... | |
| Rosemary | 9/1/2010 |
| Q: My healthy rosemary shrub has developed little bits of white foam on some of the branches. It can ... A: Janet: This may be evidence of an insect called a spittle bug. The immature insect is within this ... | |
| privet hedge dieback | 9/1/2010 |
| Q: very mature hedges 7-8 feet tall experiencing dieback. smaller hedges nearby doing the same. A: Hey Larry: Several possibilities. One is there may be a disease organism killing those twigs. ... | |
| brown leaves on spider plants | 9/1/2010 |
| Q: I have some spider plants that I keep indoors and are hanging from the ceiling in front of windows. ... A: Dena: These symptoms may be related to root/soil stress. Soil should be moist, not too wet or dry. ... | |
| splitting and peeling bark | 8/31/2010 |
| Q: Vann, I have a dwarf orange tree. The canopy has been dying back for the last few years and in the ... A: Based on your description, I suspect that there may be some level of internal decay. This is a ... | |
| golden euonymous scale | 8/29/2010 |
| Q: Just the other day I found out why my golden euonymous shrubs have lost their leaves. The scale ... A: Rhonda: Scale is a type of insect that can cause significant damage to euonymous. In my part of the ... | |
| plumcot -aprium disease | 8/27/2010 |
| Q: What is the treatment for a plumcot tree that has honey colored, gummy oozings coming from the ... A: Patricia: This resinous material is a defense mechanism that the tree exhibits to a wound. This is ... | |
| fruitless mulberry tree | 8/27/2010 |
| Q: My brother has four trees and three of them the leaves are just shriveling up. Not turning yellow ... A: Corliss: Couple of things to check out. Examine a few leaves closely for the presence of any ... | |
| Sunflowers attacked by little black ants | 8/26/2010 |
| Q: These critters have systematically killed the leaves one at a time as they made their way up the ... A: Jim: I am unable to see enough detail to make a guess. These may be the cause for the ants being ... | |
| Euonymus shrub has sections dying/bark peeling | 8/26/2010 |
| Q: I have a mature 6'+ Euonymus shrub that has never had a problem in the past. We had a wet spring, ... A: The black stuff is probably a fungus that is secondary to the true cause. It is just enjoying ... | |
| lilac | 8/25/2010 |
| Q: I planted four lilac bushes, one white and 3 purple,(about 3 foot tall) last year. They were ... A: Violet: Difficult to say w/o seeing the actual trees. Are you quite sure that the moles/voles are ... | |
| asian pear | 8/25/2010 |
| Q: The fruit looks like some kind of cancer. It feels hard when bite into it. A: Ling: This may be symptoms of a virus plant disease on pears called stony pit. To confirm, the ... | |
| Fungus Gnats On Meyer Lemon | 8/25/2010 |
| Q: I have a Meyer Lemon Tree (2' + tall) that I purchased a few weeks ago from my local Lowes hardware ... A: Sorry for the delay. I was visiting w/my next door neighbor to my office. He is a "bug" person- I ... | |
| Ornamental Plum disease | 8/24/2010 |
| Q: I have an ornamental Plum tree that has developed numerous areas of gelatinous globs that drip onto ... A: Wilma: These "globs" are probably plant sap that oozes from the tree. It looks like a clear to amber ... | |
| slime mold | 8/24/2010 |
| Q: I am trying to determine if a photo that was taken in Anchorage Alaska is indeed Physarum sp. Slime ... A: David: This does not resemble the species of Physarum that I am familiar with. It would need to be ... | |
| potted mulberry tree problem | 8/24/2010 |
| Q: Vann I have a potted mulberry tree (probably came from one at the front of our house in Chicago). ... A: Rosalie: Useful information to know. Can you send me a closeup photo of the cottony patch on a ... | |
| african sumac trees | 8/24/2010 |
| Q: We have eight af. sumacs spread over an acre, various sizes. The new leaf sprouts at the end of all ... A: Liz: Are these newly planted trees? It would probably be best if someone could make a "house call" ... | |
| Chinese Pistache Tree Dying/Diseased | 8/23/2010 |
| Q: Our 4 year old Chinese Pistache Tree suddenly appears to be dying. The leaves turned brown, and are ... A: I doubt if the insects are directly related to your issue. Look the trunk over for evidences of ... | |
| Locust leaf drop | 8/23/2010 |
| Q: We've lived here 7 yrs and this is the first time we've had the locust leaf drop. And it started in ... A: Anthony: Many things can cause an early leaf drop. Usually it is often related to some unfavorable ... | |
| Euonymus shrub has sections dying/bark peeling | 8/22/2010 |
| Q: I have a mature 6'+ Euonymus shrub that has never had a problem in the past. We had a wet spring, ... A: Lindsay: If the branch is definitely drying back, just snip out that branch to try to remove as much ... | |
| stephanotis plant | 8/22/2010 |
| Q: I recently bought a stephanotis plant and it has been growing quite nicely, lately though I have ... A: Anne: This sticky stuff may be "honeydew" (insect poop) that drips on the leaves, sometimes from the ... | |
| Sunflowers attacked by little black ants | 8/22/2010 |
| Q: These critters have systematically killed the leaves one at a time as they made their way up the ... A: Jim: If these insects are indeed ants, then they are on the plant for some other reason rather than ... | |
| marigold problem& | 8/22/2010 |
| Q: i have beautiful bunches of marigold plants in the yard--suddenly the flowers are turning brown ... A: Joan: Check the leaves for spider mites. These plants are spider mite magnets. These 8 legged ... | |
| lilac bush | 8/22/2010 |
| Q: My lilac didn't seem to grow or flower much this year and the leaves now seem to have a whitish ... A: Jon: The powder may be a fungus disease called Powdery Mildew. Lilac is a commonly affected plant. ... | |
| willow tree | 8/21/2010 |
| Q: I have a very large willow tree with large knots/bulges all over it from top to bottom (looks like ... A: Barbara: Several things can cause these "burls" or "galls". It may be an insect or disease. I ... | |
| Peach Tree | 8/21/2010 |
| Q: There is sap coming out of the trunk of my peach tree. What can I do? A: This exudate is produced by the tree in response to an injury. Often this injury is caused by a ... | |
| Live Oak Disease | 8/21/2010 |
| Q: We live in a very rural area of south central TX and built a pond 7yrs ago around a very mature live ... A: Connie: It is difficult to say w/o seeing the tree in person. Maybe more than a coincidence that the ... | |
| potted mulberry tree problem | 8/20/2010 |
| Q: Vann I have a potted mulberry tree (probably came from one at the front of our house in Chicago). ... A: Rosalie: Mealybugs are a type of scale insect. They look like little raised cottony balls. Often ... | |
| Ming Aralia | 8/19/2010 |
| Q: I have an Aralia that has recently developed "bumps" on the underside of the leaves. I have ... A: Janne: The soapy water that you mentioned. Best to use the already prepared stuff rather than ... | |
| Oak tree leaf concern | 8/19/2010 |
| Q: Waushara Cnty, WU and recently went up to visit my land. Many of the oak trees had what appeared to ... A: Judy: email address is: svann@uaex.edu Again, be sure to review your images on your computer ... | |
| Aspen disease | 8/19/2010 |
| Q: Our Aspen trunk and leaves are covered with a sticky substance that appears to be killing the trees. ... A: Jim: If this substance is clear initially, then develops a black color, it may be a condition called ... | |
| Ming Aralia | 8/19/2010 |
| Q: I have an Aralia that has recently developed "bumps" on the underside of the leaves. I have ... A: These bumps look like a condition (not a disease) called edema/odema that is caused by fluctuations ... | |
| Chanticleer pear | 8/19/2010 |
| Q: My C pears have black leaves and now are yellowing very badly on the ends particularly near the top ... A: Diane: This does not look like fire blight. In fact, I don't think this is a bona fide infectious ... | |
| Chanticleer pear | 8/18/2010 |
| Q: My C pears have black leaves and now are yellowing very badly on the ends particularly near the top ... A: Diane: Ornamental pears are susceptible to a bacterial disease called Fire Blight in which the ... | |
| gall or caterpillar growth on lilac | 8/18/2010 |
| Q: My 4 yr lilac has withering leaves and a section of dying? limbs. I found what looks like a brown ... A: Becky: From your description of this "cocoon", I suspect that this is indeed an insect, but probably ... | |
| Holly bush dying | 8/18/2010 |
| Q: we have 2 holly bushes in our backyard, one of which (the male) appears to be dying or dead. The ... A: Nancy: Thanks for your photo. I noticed the soil appears wet and there is a drainage pipe visible. ... | |
| weeping willow | 8/18/2010 |
| Q: Was doing great until this year. Very sparse growth and the bark is separating from the tree trunk ... A: Mary: The symptoms that you describe are indicative of a potential internal decay that is probably ... | |
| water oak tree | 8/17/2010 |
| Q: From our research, our water oak tree has HYPOXYLON CANKERS. The black/brown spot started as a ... A: This fungus (Hypoxylon)is considered a secondary invader, that is, it is usually found on trees that ... | |
| yellowing of peach leaves | 8/17/2010 |
| Q: My two year old peach tree has all leaves turned yellow and has stooped growing tall. Please do let ... A: There may be several issues that come into play here. First, examine the trunk area for evidence of ... | |
| Gall | 8/16/2010 |
| Q: Here in Sedona, Arizona, we found what we believe are gall's on a tree (Holly Tree?) and are trying ... A: Craig: UPDATE 08/17/2010 After consulting with a couple of my "bug" colleagues from NC and TN ... | |
| Gall | 8/16/2010 |
| Q: Here in Sedona, Arizona, we found what we believe are gall's on a tree (Holly Tree?) and are trying ... A: Craig: This web site has the option to attach an image. Be sure to review your image on your ... | |
| Oak tree leaf concern | 8/16/2010 |
| Q: Waushara Cnty, WU and recently went up to visit my land. Many of the oak trees had what appeared to ... A: Judy: Got your photo. This may be powdery mildew, especially if it looks "fuzzy", like little white ... | |
| Oak tree leaf concern | 8/16/2010 |
| Q: Waushara Cnty, WU and recently went up to visit my land. Many of the oak trees had what appeared to ... A: Not sure w/o seeing some leaves. Can you take and send me a closeup photo of a couple of these ... | |
| Apricot Tree Borers | 8/16/2010 |
| Q: My apricot tree is nearly dead and I've seen several borers on it. Though I can't save the tree at ... A: Beth: A couple of things to consider. Removing and disposing of the infested tree. After the tree ... | |
| redwood turning yellow | 8/15/2010 |
| Q: the 60 yr old redwood in my yard has about 1*/8th of the needles turned yellow, which I have never ... A: Roger: This symptom may indicate a potential root/soil related stress. This may be water or nutrient ... | |
| holly | 8/14/2010 |
| Q: I have 2 holly bushes, one on each side of my front door steps. One is thriving, the other has ... A: Michelle: If the salt concentration is high enough in the root area, yes it can cause injury. First, ... | |
| Lilac leaves turning yellow/light green | 8/13/2010 |
| Q: I need some help figuring out what might be wrong with my lilac shrub. I planted 2 shrubs this ... A: Barb: The symptoms that you describe are likely related to a soil/root issue. A nutrient or soil ... | |
| Marshmellow looking | 8/12/2010 |
| Q: I have a two year old Pittosporum Tenuifoluim, about 8-9 feet tall growing in full sun in Southern ... A: Mary-Alice: Thanks for the photo. If this material is soft and "foamy" like a glob of saliva ... | |
| Bradford pear trees | 8/12/2010 |
| Q: I have 9 Bradford pear trees lining one side of my corner lot that were planted 20 years ago. ... A: Douglas: There may be some genetic differences in the replacement tree compared to the existing ... | |
| Shrub | 8/11/2010 |
| Q: I have some Golden Box Honeysuckle that is 3/4 years old. It has always been healthy but is now ... A: Andrew: Your question is outside my area of knowledge, but I would be concerned about the type of ... | |
| Marshmellow looking "stuff" coming from branches | 8/11/2010 |
| Q: I have a two year old Pittosporum Tenuifoluim, about 8-9 feet tall growing in full sun in Southern ... A: Mary-Alice: This exudate may be insect in origin, but not sure w/ seeing. Can you take and send a ... | |
| Gardenia Topiaries | 8/11/2010 |
| Q: I have a Gardenia Topiaries that has become infested with ants, regular house ants. They seem to ... A: More than likely, the ants are there for some other reason. They may be feeding on other insects or ... | |
| Cleveland Bradford Pear trees | 8/10/2010 |
| Q: I have two Cleveland Bradford Pear trees in my front yard. During the spring they bloomed and then ... A: Carol: These ornamental pears are susceptible to a bacterial disease called bacterial fire blight. ... | |
| spotty peaches | 8/10/2010 |
| Q: My neighbor has a peach tree and the peaches have black spots on the flesh and in some places the ... A: Melissa: If these spots look like tiny crystallized "amber colored dew drops" this may be evidence ... | |
| Tomatoes | 8/9/2010 |
| Q: As my tomatoes begin to ripen/turn red, the bottoms are getting white and mushy. A: Deborah: If the fruit develops a bleached area, this may be a condition called sunscald (a.k.a. ... | |
| pecan trees | 8/9/2010 |
| Q: i have 2 five year old pecan trees.both of them have a yellow tent to the leaves.and small brown ... A: Best thing to do is get a soil test done to determine if there is a fertilizer deficiency. Your ... | |
| fungus on bonzi (sabago palm) | 8/9/2010 |
| Q: I have a bonzied sabago palm and it has a fungus? that looks like little white spots on the palm ... A: Keith: Difficult to say w/ seeing your plant. These spots may be an insect such as mealy bug or ... | |
| Dracena Marginata | 8/9/2010 |
| Q: I have, what was, a handsome plant. It now looks sickly and I have discovered some white fungas ... A: Can you perhaps send me a closeup photo of this white stuff? What specifically does it appear to be ... | |
| Aspen | 8/9/2010 |
| Q: There are white "fuzballs" on the trunk of many of my apsen. I have tried just washing them off but ... A: Mike: Difficult to determine if this is an insect or a fungus. Remove a small piece (1/8") in this ... | |
| Canker on Evergreen | 8/8/2010 |
| Q: I have two evergreen trees approximately 3 yrs old. I've been told they have Canker Disease and that ... A: Gina: Depending on the organism that causes the canker. If the organism is a fungus, pruning is the ... | |
| elm tree | 8/8/2010 |
| Q: We have white barnacle like spots on the underside of branches on a weeping elm tree. It attracks ... A: Carol: These barnacles may be a type of insect or fungus. Can you take a photo and send to me to ... | |
| Pencil Hollies | 8/8/2010 |
| Q: My Pencil Hollies leaves are turning brown at the bottom and in side the plant and falling off. The ... A: Terry: Water may be an issue. Be sure it is getting a deep irrigation. Be sure that the soil drains ... | |
| My beloved sweet peas | 8/8/2010 |
| Q: I live in Victoria BC and my sweet peas and garden peas have turned white and are dying. Is this a ... A: There is a fungus disease called powdery mildew that causes white "fuzzy" patches or blotches to ... | |
| Crepe Myrtle | 8/7/2010 |
| Q: I have 3 crepe myrtles that I purchased and planted last fall. Most of the leaves are deep burgundy, ... A: Patty: I do not think we are dealing with a bona fide infectious disease. The leaf color may be ... | |
| JAPANESE RED MAPLE | 8/6/2010 |
| Q: HAVE A LARGE AND OLD JAPANESE RED MAPLE.THAT THIS YEAR HAS STARTED TO HAVE LEAVES TURNING BROWN AND ... A: Randy: A water deficit can cause leaf browning and drop. Usually trees can tolerate dry conditions ... | |
| Crape Murtle | 8/6/2010 |
| Q: I live North East of Houston, and it has been a wet July. My Crepe Murtles are covered with black! ... A: Sounds like from your description that your shrubs may be suffering from a condition called "sooty ... | |
| CAMELLIA BUSH DISEASE | 8/6/2010 |
| Q: LARGE CAMELLIA JAPONICA LEAVES COVERED WITH BLACK SOOTY SUBSTANCE ON TOP OF LEAVES AND ON BRANCH ... A: Sounds like your shrub has a condition called "sooty mold". This black stuff results from an insect ... | |
| Iris/Daylillys | 8/6/2010 |
| Q: (too long a thread again!) Steve Glad the photo got through. Early blight is what I presumed I had ... A: Dave: Drip irrigation is great. And for tomatoes as well as other vegetables, good idea to keep the ... | |
| Boxwoods | 8/6/2010 |
| Q: I have a well irrigated and well drained bed with American Boxwoods. Recently one plant has started ... A: Jeff: Can you send me a photo of that affected plant as it sits in the landscape? I would like to ... | |
| fungus at the base of mature maple tree | 8/5/2010 |
| Q: I have a mature maple (approximately 40 to 50 years old). It has a very dark red (almost wine ... A: Alison: This may be a type of slime mold that you are looking at. Crusty on top and "sooty" below ... | |
| Iris/Daylillys | 8/5/2010 |
| Q: (too long a thread again!) Steve Glad the photo got through. Early blight is what I presumed I had ... A: Dave: One easy way to recognize EB is that the spots usually have a "target spot" look, that is ... | |
| fungus at the base of mature maple tree | 8/5/2010 |
| Q: I have a mature maple (approximately 40 to 50 years old). It has a very dark red (almost wine ... A: Alison: This may be some type of root/trunk decay fungus. Can you send a photo of this fungus? There ... | |
| Oak tree leaves | 8/5/2010 |
| Q: I ask Jim Hyland a question about an Oak tree I have that has what Jim thinks is fall web worms but ... A: William: If this is fall webworm, the actual web offers quite a bit of protection for the "critters" ... | |
| Pumpkin plants | 8/5/2010 |
| Q: I have been growing a pumpkin plant in my vegetable garden, and it was growing great until about ... A: Julia: For all of your vegetable plants, it is best to do your best to keep the leaves dry. This can ... | |
| Maple tree | 8/4/2010 |
| Q: I have a red maple tree that was planted last year. This summer the leaves have become an ... A: These are symptoms of a potential nutrient imbalance -possible Iron. Suggest getting a soil test ... | |
| Scale on Magnolia Tree | 8/4/2010 |
| Q: We have a beautiful magnolia that is totally infested with scale. I wonder if you could tell me what ... A: Gigi: Visit with your local garden center or nursery about a product (insecticide) called BAYER ... | |
| Iris/Daylillies | 8/4/2010 |
| Q: Steve (Our thread was too long, so AllX made me start a new one.) Thanks for your continued interest ... A: Dave: I saw your image of the three leaves. This symptom of leaf tip browning, especially if it is ... | |
| Discolored Day Lilly Leaves | 8/2/2010 |
| Q: Dr. Vann Every year my day lillies come up healthy aand thriving. Then, the tips of the leaves begin ... A: Dave: Hey, it happens to the best of us- no problem. Could you send along a closeup photo of a few ... | |
| balcony problems | 8/2/2010 |
| Q: do you by any chance know this could be, it's affecting my balcony plants, it started on basil, and ... A: Ivana: This may be evidence of an insect called a leaf miner. It feeds in between the upper and ... | |
| Problem with Golden Euonymus | 8/1/2010 |
| Q: I've had six of these plants in the ground for 3-4 months. I had amended the soil, used a starter ... A: Jerry: The plants that I am familiar with are not fast growers. One thing that helps to get these ... | |
| tomatoe plants | 8/1/2010 |
| Q: My tomato plant stems and leaves are turning yellow then brown and drying up. The fruit looks fine ... A: Dee: This may be related to heat/drought conditions or even a disease, depending on where you live. ... | |
| Chanticleer Pear | 8/1/2010 |
| Q: I just planted a 2.5" caliber chanticleer pear tree 8 days ago. Yesterday (day 7 after planting)I ... A: Misty: The symptoms on your leaf is indicative of a root related issue. It could be several things, ... | |
| crepe myrtle | 8/1/2010 |
| Q: I have a crepe myrtle tree that is about 5 years old. This year we have had hot dry weather and ... A: Diane: This is probably a condition called sooty mold. This is not a disease, but the result of an ... | |
| disease | 7/31/2010 |
| Q: What are small round greenish and about 1/4 inch tall that grow on the leaves of my trees. Walnut ... A: Donna: I suspect that you are referring to an insect gall- perhaps an insect called phylloxera. ... | |
| Diseased Plants | 7/31/2010 |
| Q: I have 3 plants (unidentified plant, phox, and roses) in a row that look to be diseased or have some ... A: Kathy: There is a fungus disease called powdery mildew that goes to phlox. It looks like white ... | |
| Discolored Day Lilly Leaves | 7/31/2010 |
| Q: Dr. Vann Every year my day lillies come up healthy aand thriving. Then, the tips of the leaves begin ... A: Dave: There may be a water or heat issue where you live. This does not sound like a bona fide ... | |
| Diseased Plants | 7/30/2010 |
| Q: I have 3 plants (unidentified plant, phox, and roses) in a row that look to be diseased or have some ... A: Kathy: From your photo, it looks like the leaves are just firing up. Are all three plants doing the ... | |
| money tree bug problem | 7/29/2010 |
| Q: i have an indoor money tree, small a 1 ft. recently i noticed there are small flying bug coming out ... A: Min: These may be tiny insects called "fungus gnats". They are black, maybe 1 mm length, and very ... | |
| Pumpkin plants | 7/29/2010 |
| Q: I have been growing a pumpkin plant in my vegetable garden and it was growing very well until about ... A: Julia: Preventative applications of an appropriate material works by far the best. These plants may ... | |
| blue holly bush | 7/28/2010 |
| Q: My holly bush has yellow leaves with dark spots on them. What is it and how do I treat it? When ... A: Kim: There are actually several possibilities for the cause of these spots, not all are considered ... | |
| Cherry Tree Yellowing | 7/27/2010 |
| Q: I just planted my Akebono cherry (12 gallons) a few months ago in the grass of my park strip (about ... A: Lisa: The top of the root ball/root collar of the tree should be level with or 1-2 inches above the ... | |
| Cherry Tree Yellowing | 7/27/2010 |
| Q: I just planted my Akebono cherry (12 gallons) a few months ago in the grass of my park strip (about ... A: Could you send a photo of the first tree that you planted showing how it is situated in the ... | |
| Lilacs | 7/27/2010 |
| Q: The leaves on my lilac bush are turning white or the surface of the leaves look white & anemic, what ... A: Beverly: Lilacs are susceptible to a fungus disease called powdery mildew. This may be what you are ... | |
| plant disease | 7/27/2010 |
| Q: sir, i have 10 silveroaks almost 7yr old. one fine morning i found one of them dried from the tip to ... A: Vrinda: I suspect that if indeed this is an insect infestation by a borer type insect or for that ... | |
| Mulberry Tree | 7/27/2010 |
| Q: We have a Mulberry tree or bush and it currently has berries on it which are turning red. The ... A: Matt: You are welcome to send a photo of the plant. In the meantime, examine the bottom portion of ... | |
| meyer lemon tree | 7/26/2010 |
| Q: I planted a full size meyer lemon tree in the back yard, middle of San Francisco, about 7 years ago. ... A: David: It is not uncommon for small animals to chew the bark. Squirrels and rabbits are notorious ... | |
| ginko tree problem | 7/25/2010 |
| Q: I live in California's hot Central Valley. Planted two ginkos about 10 years ago and have enjoyed ... A: Lin: Sounds like there may be have been a water deficit past the critical point for that one tree. ... | |
| orange spots on apple tree leaves | 7/25/2010 |
| Q: I have orange spots on my apple tree leaves. The tree is young and has two small apples. We ... A: David: I would be suspicious of a fungus disease called cedar-apple rust. It produces large orange ... | |
| plant disease | 7/25/2010 |
| Q: sir, i have 10 silveroaks almost 7yr old. one fine morning i found one of them dried from the tip to ... A: Vrinda: This glue like substance is probably plant "sap" formed as a defense mechanism to an injury. ... | |
| Golden Euonymus | 7/23/2010 |
| Q: I have several of golden euonymus shrubs and they are about 4 to 5 years old. Always looked great ... A: That all depends on how high the insect population is. If it is severe enough in your estimation, ... | |
| meyer lemon tree | 7/22/2010 |
| Q: About 1 1/2 years ago I purchased a dwarf Meyer lemon tree. This summer there are small oval shaped ... A: Nancy: From your description, these spots may be a type of insect called scale insect. They are ... | |
| Yoshino cherry | 7/22/2010 |
| Q: My Yoshino cherry tree looks as if it is dying. It has been a long dry summer, but others in my ... A: This gel is a product of the tree. It is produced as a defense mechanism to injury. Most often, this ... | |
| Golden Euonymus | 7/22/2010 |
| Q: I have several of golden euonymus shrubs and they are about 4 to 5 years old. Always looked great ... A: Debbie: Based upon your description and having not seen your plants, I would guess scale insects. ... | |
| Beech hedge | 7/21/2010 |
| Q: When I moved into my home (approx 10 years ago) I planted a green beech hedge as a boarder in the ... A: Nigel: There are several possibilities, however it would be best for someone to see and examine an ... | |
| Cotton like area on small evergreen or juniper shrubs | 7/21/2010 |
| Q: I have several evergreen or juniper shrubs with a white cotton like web appearing on the branches in ... A: Annette: If the webbing appears very fragile and sparse, it may be spider mites. You really need to ... | |
| crepe myrtle fungus | 7/21/2010 |
| Q: I live in Ft Worth, TX and I have a crepe myrtle tree that is approximately 24 yrs old. The bark on ... A: Ed: No problem with not sending the images. In my mind, the only thing that I know of that makes ... | |
| Magnolia Tree | 7/20/2010 |
| Q: I recently moved into a new home with a beautiful ornamental magnolia tree at the entrance to the ... A: The black bark may be caused by a fungus called sooty mold. Sooty mold occurs as a result of an ... | |
| white substance on trunks of white pine | 7/20/2010 |
| Q: I have noticed a white hazy substance on three pine trees in our yard. The trees are about 40 feet ... A: Jeff: Thanks for your photo. I do not recognize this as being a disease or insect issue. Since you ... | |
| white substance on trunks of white pine | 7/20/2010 |
| Q: I have noticed a white hazy substance on three pine trees in our yard. The trees are about 40 feet ... A: Jeff: A photo would indeed be nice. Try to get close if possible and review your image on your ... | |
| Aloe Barbadensis Diseases | 7/19/2010 |
| Q: I've had my Aloe plant for a little over eight months. It was doing fine until recently. The leaves ... A: CJ: Overwatering can be a big issue on these plants. Be sure that the soil drains good. These do not ... | |
| apricot s | 7/19/2010 |
| Q: We have recently purchased a home with an old apricot tree in the yard. There is sap coming from ... A: Joan: This sap is usually amber colored and sometimes thick and even hard. It is a tree defense ... | |
| Mushrooms at base of tree | 7/19/2010 |
| Q: We have an elm tree, I think it's a chinese elm which is about 10 years old. Last year, a storm ... A: Jennie: Not sure of the size of these, but if they are about 1/4 inch in diameter and look like ... | |
| Magnolia tree | 7/18/2010 |
| Q: I just noticed what look like tiny cotton balls up and down almost every tree limb.The tree is ... A: Sam: Sounds like you are describing scale insects on the twigs. There are are lot of different ... | |
| wood worm!!! | 7/18/2010 |
| Q: my mature lilac appears to have wood worm . Is this likely ? is there anything i can easily do - a ... A: Mandy: Are you speaking of an insect that bores into the wood of many trees? I am not familiar with ... | |
| Brown spots on leaves of Water Oaks | 7/18/2010 |
| Q: The leaves on my water oak are starting off with brown circular spots, some directly in the middle ... A: Vincent: Difficult to say with out seeing the tree in person. I'd start by checking the trunk and ... | |
| droppings around potted ficus tree | 7/18/2010 |
| Q: Greetings, I am mystified by droppings I find each morning all around my potted ficus. The tree is ... A: Elizabeth: As I mentioned, look for a caterpillar type critter. Check also at night since it may be ... | |
| Pin Oaks | 7/17/2010 |
| Q: I have several pin oaks and two of them have problems, one with dying branches that have long deep ... A: Debbra: Difficult to say w/o seeing the tree in person. Suggest examining closely, the trunk areas ... | |
| fruitless mulberry leaves yellowing | 7/17/2010 |
| Q: At least for now, the yellowing seems to be isolated to one fork of the tree.They are quickly ... A: Bob: Some herbicides (weed killers) can cause tree damage, especially if they are applied on windy ... | |
| Cherry Tree Ailing | 7/17/2010 |
| Q: In the past two weeks almost two thirds of the leaves on my cherry tree have turned brown and died. ... A: Signe: Your symptom description may indicate a potential insect invasion by boring type insects. The ... | |
| Two Questions | 7/17/2010 |
| Q: Vann. I have two questions that I would like answers to. I have a magnolia bush. About 30% of the ... A: Jeanne: A couple of things to consider on the leaf curling. (1) Have any weed killers (herbicides) ... | |
| mulberry tree curlling leaf disease | 7/16/2010 |
| Q: I live in western Colorado and have numerous mulberry trees.Many of the trees have some type of ... A: Doug: Difficult to tell w/seeing a sample. Examine the undersides of the leaves for any "critters". ... | |
| crape mrytle bush | 7/16/2010 |
| Q: I just purchased this bush and after it was planted I noticed some kind of sack attached to the ... A: Connie: I would suspect that this is probably an insect that is just using the stems as a support ... | |
| Carrotwood tree and thrip | 7/15/2010 |
| Q: I just purchased a carrotwood tree to replace a 35 yrs old myoporum which has been stricken w/the ... A: Carolyn: Difficult to say if this tree is a very important host to this insect. This tree is quite ... | |
| Honeysuckle plant disease | 7/15/2010 |
| Q: Our honeysuckle plant gets this problem each summer. Leaf yellowing starts, and quickly the leaf ... A: Esther: The yellowing/browning type symptoms often occur as a result of root/soil related stress, ... | |
| A question about my new weeping willow tree | 7/14/2010 |
| Q: Late April this year, i planted a baby weeping willow tree. I check it everyday and water it often. ... A: Haley: If most or all of the leaves are doing this, then I suspect not a bona fide infectious ... | |
| Japenese Maple Tree | 7/14/2010 |
| Q: I planted a lace leaf japenese maple in my flower bed in May. We notice that the tips of the leaves ... A: The brown tips/edges is often due to a root issue such as water imbalances- most of the time the ... | |
| leaves turning yellow | 7/14/2010 |
| Q: I just planted a prairifire crabapple tree, 2 weeks ago. the leaves are turning yellow, starting at ... A: Sharon: Based on the time frame that you indicated, I would not suspect a bona fide infectious ... | |
| Disease on Lilac | 7/14/2010 |
| Q: I Live in the Pacific NW. My Lilac that has been here since we moved in, has developed a brown ... A: Many different things may be responsible for the leaf spots. Can you send along a closeup photo of a ... | |
| Cast Iron (Aspidistra) | 7/13/2010 |
| Q: Several of my plants (on north side of house) have yellow leaves (ends are brown). Too much sun? ... A: Ann Marie: These plants prefer shade and moist, but well drained , sometimes poor soil to do their ... | |
| Brown rot on peach tree | 7/13/2010 |
| Q: I have a peach tree that has the fruit turning brown and rotting. I looked up and see it is brown ... A: Mike: Best to spray early season. Probably too late now. Remove/destroy any rotted fruit from the ... | |
| Rosemary and Thyme disease | 7/12/2010 |
| Q: I have a question regarding a disease on a few of my plants. All 3 plants are sharing a large ... A: Kele: Your spices may have an insect on them that is attracting the ants. Can you send a closeup ... | |
| Cone flower disease | 7/12/2010 |
| Q: a large amount of our cone flowers are "cut off" about two inches beneath the flower. a little ... A: Dan: I would suspect an insect, perhaps a caterpillar type critter. It is best to capture and ID a ... | |
| Fruit Tree Diseases | 7/12/2010 |
| Q: I have 2 problems. 1 is my new dwarf plum tree which i have only had a couple of months. I thought ... A: Paul: These spots may be bacteria in origin. This may be a disease called bacterial spot. Take a ... | |
| Fruit Tree Diseases | 7/12/2010 |
| Q: I have 2 problems. 1 is my new dwarf plum tree which i have only had a couple of months. I thought ... A: Paul: Browning of the leaf edges throughout the tree may be an indication of root/soil related ... | |
| Elm Tree with Peeling Bark | 7/11/2010 |
| Q: I have an elm tree that has begun to peel its bark in large quantities. Attached is a picture. Can ... A: Keever: I do not recognize a bona fide infectious disease here from your photo. The tree, if ... | |
| crepe myrtle disease | 7/11/2010 |
| Q: What would cause a crepe myrtle leaves to turn yellow and then brown? They are not dropping on the ... A: Mary: There may be an issue with the trunk or roots. Do the leaves have any spots or are they just ... | |
| honeysuckle disease | 7/11/2010 |
| Q: My honeysuckle has grown very well and has produced multitudes of flower buds, but they are all ... A: Keith: These sets of symptoms do not sound like a disease that I am familiar with, especially if the ... | |
| Bramley apple tree | 7/10/2010 |
| Q: The bark at the base of my tree has become dark and cracked. What could it be and what shoul I do ... A: Nigel: This looks like old mechanical injury (tools/lawnmower/other equipment) that may haved caused ... | |
| Elm Tree with Peeling Bark | 7/10/2010 |
| Q: I have an elm tree that has begun to peel its bark in large quantities. Attached is a picture. Can ... A: Keever: Depending on the type of tree, this peeling may be normal, especially if the leaves look ... | |
| Fruit Tree Diseases | 7/9/2010 |
| Q: I have 2 problems. 1 is my new dwarf plum tree which i have only had a couple of months. I thought ... A: I am sorry, but your plum photo is quite a bit "fuzzy" and I cannot see any detail. Can you resend? ... | |
| Regrowth after ponytail palm rot? | 7/9/2010 |
| Q: but a couple weeks ago I noticed that the base of the leaves were white and soft, 2 of the 3 bulbs ... A: Alisa: If the "bulbs" were soft and mushy w/maybe a foul smell, then this may indicate some level of ... | |
| Norway Maple Trees | 7/9/2010 |
| Q: We live in the east on Long island, New York and have four Norway maple tress in our yard that are ... A: If you care to, try to describe these wooly things and I'll give it a shot to ID. Please let me know ... | |
| Fruitless Mulberry leaves | 7/8/2010 |
| Q: We have a very old fruitless mulberry tree that has been healthy. This summer I have noticed that ... A: Ritamarie: This does not sound like a disease that I am familiar with. If the leaves are discolored ... | |
| Honeysuckle flowers | 7/8/2010 |
| Q: My elderly neighbour has a honeysuckle. The flowers have not opened properly and have curled and ... A: Lin: There are a few things that may cause this. Often, tiny insects called thrips can get inside ... | |
| Norway Maple Trees | 7/7/2010 |
| Q: We live in the east on Long island, New York and have four Norway maple tress in our yard that are ... A: Carol: Thanks. A photo could be be very helpful. After you take the shot and get a bit of help ... | |
| Holly Tree - disease? | 7/6/2010 |
| Q: I live in middle TN and we planted in May, 2009 a 5'-6' Oakleaf Holly tree in our front bed. It has ... A: Adelaide: I don't think this "stuff" is caused by a harmful insect, but merely a small nest that may ... | |
| Little Gem Magnolia problem | 7/6/2010 |
| Q: We just had a row of Little Gem Magnolia's planted this spring. In the past couple of weeks we have ... A: Jeri: These are a type of insects called wax scale. We see them also on holly bushes. If you have ... | |
| crown of thorns | 7/5/2010 |
| Q: I have some sort of parasite growing in my crown of thorns. It looks like a mold with some sort of ... A: Jasen: If this stuff is at the base of the stem, this may represent a root/stem type rot. Many of ... | |
| Caterpillers eating away a white Birch Trees | 7/5/2010 |
| Q: A question from southern Ontario Canada. We have two rows of large white Birch on both sides of our ... A: Brian: The pour on product will probably do better if applied in the spring. Check in with your ... | |
| lilacs | 7/4/2010 |
| Q: The wood on my lilac looks as if it has snowed in June. A white substance surrounds many of the ... A: Ray: These are scale insects. They are sucking type insects. They do not move around on the plant ... | |
| Jade plant | 7/4/2010 |
| Q: I have a Jade plant that is about 50 years old. For the last three years it has developed a sticky ... A: Karen: This sicky stuff sounds like "honeydew" which is insect "poo". Look close for insects on both ... | |
| crepe myrtle | 7/4/2010 |
| Q: my crepe myrtle is untrimmed and very big - gives us shade on our patio - but all the bark is ... A: Mary: The thin outer layer of bark normally peels and sloughs off on crapemyrtle. Comes off in small ... | |
| Webs covering tops of Rosemary bushes | 7/3/2010 |
| Q: We have three large 4ft diameter rosemary bushes that are about 10 years old. This year in Los ... A: David: Use "Google Images" on your computer and take a look at photos of "Fall Webworm", These ... | |
| spider like webs on English garden plants | 7/3/2010 |
| Q: I've developed spider-like webs on some of my plants in my English garden... lemon thyme, ajuga, ... A: Nancy: I am not aware of products for spiders on plants. There is a plant pest called spider mites ... | |
| sago Palm..no new leaves | 7/3/2010 |
| Q: Three years Sago grew a ball in center, never leafed out, and has multiple orange ball like pods ... A: Carol: If the plant is in a pot, it may have outgrown its surroundings. Check the amt. of soil in ... | |
| pin oak tree | 7/3/2010 |
| Q: Our pin oak is approximately 15 ft tall. the leaves seem to be very yellow and not a deep green. We ... A: June: Your tree may be just hungry. You can have your soil tested by the Agricultural Extension ... | |
| Weeping MulberryTree | 7/3/2010 |
| Q: I have small white moths on my tree. Are they harmful, if so how do I get rid of them? A: Paula: If they are small enough to resemble "dandruff" when you shake the leaves, these may be ... | |
| snowball bush | 7/2/2010 |
| Q: My snowball bush has had the ends of each branch ( the twigs) spiral and the leaves curl and are ... A: Sheldon: Various things can cause plant "deformities" such as some viruses, phytoplasmas, and even ... | |
| sick magnolia tree | 7/2/2010 |
| Q: I have a sick magnolia tree. It Bloomed the best ever this year and its now spitting out a clear ... A: Marie: More than likely, this clear,sticky substance is the product of an insect feeding on your ... | |
| wisteria woes | 7/1/2010 |
| Q: We had a huge purple lavender wisteria which covered our entire 20 x 20 patio trellis, planted in ... A: Christena: Not an easy call. Depends a lot on your existing soil and how well it holds water. ... | |
| ficus tree care | 7/1/2010 |
| Q: I'm caring for a ficus tree, which has 1) what appears to be scale on the bark and 2) on the ... A: Cheryl: If you are sure that you have scale insect in both cases, you can look at a product called ... | |
| felt scale on crepe myrtle | 7/1/2010 |
| Q: I am horrified to see what I do think is azalea felt scale on my beautiful crepe myrtle. I plan to ... A: Marcia: It is best to get the "critter" identified first. You can collect some of these and carry ... | |
| felt scale on crepe myrtle | 7/1/2010 |
| Q: I am horrified to see what I do think is azalea felt scale on my beautiful crepe myrtle. I plan to ... A: Marcia: Another treatment option is to use a product that you mix w/water then apply to the soil. ... | |
| wisteria woes | 6/30/2010 |
| Q: We had a huge purple lavender wisteria which covered our entire 20 x 20 patio trellis, planted in ... A: I suspect there may be a soil/root related issue. There may be a disease in the roots. There are ... | |
| Magnolia Tree | 6/30/2010 |
| Q: I have quite a large flowering Magnolia tree in my backyard that has a very strange looking white ... A: What a wonderful photo! This are indeed scale insects. These critters have sucking mouth parts. ... | |
| Magnolia Tree | 6/30/2010 |
| Q: I have quite a large flowering Magnolia tree in my backyard that has a very strange looking white ... A: A photo can be helpful. Be sure to review it on your computer first-- to be sure it is in focus ... | |
| Sago palm | 6/30/2010 |
| Q: I recently had new leaves come out from the center of the plant. I trimed off all the old, when the ... A: Gene: This insecticide should not cause any injury if mixed and applied correctly. Be sure to read ... | |
| Magnolia Tree | 6/30/2010 |
| Q: I have quite a large flowering Magnolia tree in my backyard that has a very strange looking white ... A: Amy: If the white powdery stuff appears as small clumps that look fuzzy, then this may be a type of ... | |
| Lilac tree | 6/29/2010 |
| Q: My lilac tree is in full bloom but the leaves are turning black. Is there anything I can do to save ... A: Joyce: If the black color wipes off with a wet finger or wet paper towel, you may have a condition ... | |
| lilacs | 6/29/2010 |
| Q: The wood on my lilac looks as if it has snowed in June. A white substance surrounds many of the ... A: Ray: Can you send along a closeup photo of this white stuff? It may be insect related, but I am not ... | |
| hydrangea | 6/28/2010 |
| Q: I HAD 3 hydrangea bushes in a mulched bed, north side of my house. In early June 3 were in full ... A: Sandy: The Root and stem rots are typically caused by a group of fungal microorganisms that are ... | |
| White powdery substance on ornamental flowering cheery tree | 6/28/2010 |
| Q: I have this white powdery substance that is accumulating on the branches of ornamental cherry trees ... A: Marios: Can you attach a closeup photo of a few of this substance on a branch? It may be a type of ... | |
| hydrangea | 6/27/2010 |
| Q: I HAD 3 hydrangea bushes in a mulched bed, north side of my house. In early June 3 were in full ... A: Next time you see a wiled stem, check the area near the soil line for any darkened area that looks ... | |
| Leaf disease on Live Oak | 6/26/2010 |
| Q: Starts on surface of leaves as a small scale-like brown spot with two darker brown holes in the ... A: These areas look like insect activity, the holes may represent exit holes for an insect that may ... | |
| My kumquat | 6/26/2010 |
| Q: Attached to this question is a picture of my kumquat plant that is a couple years old. I am curious ... A: Frank: You might consider a few possibilities. Check the upper and lower leaf surface for any insect ... | |
| Diseased Peach Tree | 6/26/2010 |
| Q: I live in the Oklahoma area where we tend to have hot and humid summers. My peach tree fruit has ... A: JR: I do not recall any type of disease that resembles this description. If this looks like ... | |
| Snowball Bush | 6/25/2010 |
| Q: Our snowball bush is faily large it has been healthy and bloomed every year. This spring it started ... A: Ruth: I'm not sure of the reason for the smaller leaves. Things to start with. Look the shrub over ... | |
| Spotting on Pepper Plant Leaves | 6/25/2010 |
| Q: I very recently purchased several small cayenne pepper plants (about 6-8 inches tall) and potted ... A: Tam: I am unable to see much detail from your small photo. Can you resend a larger image. Review it ... | |
| Lilac bush disease | 6/24/2010 |
| Q: I have a lilac bush that was transplanted about 8 years ago. It has done well, but flowered little. ... A: The tree really needs to be seen in person to determine the cause of leaf curl and dying branches. ... | |
| scale on crepe myrtles | 6/24/2010 |
| Q: I noticed this morning that there is a white-looking scale on both of my crepe myrtles. I can't ... A: Terry: There are many types of scale insects. People refer to them as having scale or having scale ... | |
| Rhododendron fungus | 6/24/2010 |
| Q: There are a white lumps with brown tips at one end that look like fungus about 1cm long on the back ... A: Jenny: These white objects may be a type of scale insect. These critters make their living by ... | |
| Schefflera plant disease | 6/23/2010 |
| Q: I have had my schefflera plant for at least 25 years. It has developed some type of fungus or ... A: Is your plant in a pot? Has anything been sprayed or allowed to drip on the plants? Can you send me ... | |
| Rhododendron fungus | 6/23/2010 |
| Q: There are a white lumps with brown tips at one end that look like fungus about 1cm long on the back ... A: Can you send a closeup photo of these lumps on the back of an affected leaf? I do not have a clear ... | |
| read maple leaves brown and falling off | 6/22/2010 |
| Q: A red maple 15+ ft tall was green when I left Jacksonville, FL for 10 day holiday this June. When I ... A: Kaye: Unfortunately not. The decay is progressive. The only thing to do is be sure it gets watered ... | |
| read maple leaves brown and falling off | 6/22/2010 |
| Q: A red maple 15+ ft tall was green when I left Jacksonville, FL for 10 day holiday this June. When I ... A: Kaye: The split with exposed dead tissues may represent some level of internal decay to the tree. I ... | |
| lilac tree | 6/22/2010 |
| Q: my lilac tree has already bloomed so much but the last 2 or 3 days the green leaves have turned ... A: Sheldon: If the leaves are "crunchy" all over, then the tree may be suffering from a root stress. ... | |
| potted evergreen tree | 6/21/2010 |
| Q: I have a potted evergreen that I have had on my patio for years. It started turning brown on one ... A: Linda: These plants prefer a well drained soil. Be sure not to overwater it. It should be watered ... | |
| lilac tree | 6/21/2010 |
| Q: my lilac tree has already bloomed so much but the last 2 or 3 days the green leaves have turned ... A: Sheldon: If they are literally black, suggest seeing if the black covering will wipe off with a wet ... | |
| Myers lemon tree | 6/20/2010 |
| Q: I just purchaced two lemon plants came in a gallon pot. I dug two holes the same depth as the pot ... A: Your plant looks like it is pretty happy so far. Give it plenty of TLC until it gets established. ... | |
| Black leaves on Chanticleer Pear | 6/19/2010 |
| Q: Just had a chanticleer pear tree planted. There were several branches with black leaves. Over the ... A: Judith: If the leaves appear as groups of brown/black leaves often on the ends of the branches, this ... | |
| pin oak question | 6/19/2010 |
| Q: I live in Central Illinois and have a big healthy oak tree in my front yard. Within the past six ... A: Ben: These swellings (galls) are caused by an very small insect called a gall wasp. The gall is ... | |
| mulberry tree fungus ? | 6/19/2010 |
| Q: I live in east central Pa , have several medium size 25' high mulberry trees (red) . the last few ... A: Michael: This white stuff may represent a fungus that is merely present on dying or declining ... | |
| sunburst locust dying | 6/19/2010 |
| Q: I originally emailed Kathy Crawley but am told she is unavailable. I have a mature sunburst locust ... A: Jim: Sounds like this tree may have some level of decay, perhaps inside- that is not readily visible ... | |
| Fuzzy White Stuff | 6/18/2010 |
| Q: I'm taking care of a plant for a co-worker, and it has this weird looking parasite that looks white ... A: Talisha: From your description this sounds like an insect, either a type of scale insect (mealy bug) ... | |
| Forsythia | 6/18/2010 |
| Q: I have one older bush and 2 new ones. All have green "growths" on their stems that almost look like ... A: Margaret: Galls may be insect or disease related. It would need to be examined in a lab to confirm. ... | |
| top of honey ash tree dying | 6/17/2010 |
| Q: last year the top of my honey ash started to die and was then covered with a web. this year it came ... A: Lillian: If the same area is affected this year, then this may be evidence of some level of internal ... | |
| river birch tree | 6/17/2010 |
| Q: My young river birch tree started to get bright pink - red patches on some of the leaves. It feels ... A: Jane: These are the evidence of a type of mite damage, probably a type of eriophyid mite. These ... | |
| plum tree leaf blight | 6/17/2010 |
| Q: My plum tree leaves have green spikes on them. What is the problem and what do I do about it. A: Don: Difficult to say w/o seeing these, but it may be a type of spindle gall that is formed by a ... | |
| privet | 6/17/2010 |
| Q: I have privet hedging on my front lawn,side of the driveway,and back garden.i planted it there five ... A: Eric: Best to check those leaves and try to find the cause of the holes. If it looks like an insect ... | |
| Weeping Cherry Tree- Leaves turning brown | 6/16/2010 |
| Q: The leaves of my weeping cherry tree have begun to turn brown in the last week. I have used Bayer ... A: I am unable to tell too much from your photo. Is is feasible to prune out that one section/branch? ... | |
| Burning Bush Disease | 6/16/2010 |
| Q: My burning bush's branches are splitting. The oddest thing. The leaves are also droopy. Has gotten ... A: Nancy: This is odd for this plant. If the bark is splitting lengthwise on these branches this can be ... | |
| tree diseases | 6/16/2010 |
| Q: i have what i thought was a healthy crab apple tree that bloomed profusely this spring then all of a ... A: Samanth: These gray bark like patches may be lichens which do not by themselves cause a disease. We ... | |
| river birch tree | 6/16/2010 |
| Q: My young river birch tree started to get bright pink - red patches on some of the leaves. It feels ... A: These patches may be an insect structure, but I am not sure without seeing them. Can you take and ... | |
| moss parasite? | 6/15/2010 |
| Q: For the past six months, or longer, we have seen a moss attacking the live trees in our area. On a ... A: Freda: I believe the first step is to get a positive identification for this plant. Consider ... | |
| white balls on pepper plants | 6/15/2010 |
| Q: all my pepper plants (all planted in pots) have white slightly elongated balls (1mm x 2 mm) in size ... A: Maria: I am not sure about these critters to know if they may be pests or just incidental insects. ... | |
| Carrotwood, San Diego | 6/15/2010 |
| Q: Our Carrotwood has developed a white powder on many of it's leaves. Is this going to be harmful to ... A: The white powder MAY be a fungus disease called Powdery Mildew. For the most part, it is a ... | |
| tree insect | 6/14/2010 |
| Q: I have recently discovered some sort of insect nesting in two large trees in my yard. They "clump" ... A: Robert: These may be scale insects or a type of beetle. You can carry these by your local nursery or ... | |
| White & Brown Lumps on Trunk | 6/14/2010 |
| Q: I have a Tulip Tree in my garden, about 8 years old. Last week I noticed these blobs on the trunk. ... A: Toby: I'd be suspicious of a type of scale insect. Insecticides containing imidacloprid are ... | |
| cleveland pear tree leaves | 6/13/2010 |
| Q: We purchased a 10 ft Cleveland pear last year from a nursery. They planted it for us. The tree so ... A: Marlene: Difficult to say what the issue is here w/o seeing it. You may ask if the nursery can take ... | |
| Cinch bugs | 6/13/2010 |
| Q: I read an answer to Bill, (email 9/13) and the description sounds very much like Cinch bug egg sacs. ... A: David: I never have heard of chinch bugs damaging a tree. You may be seeing a type of scale insect. ... | |
| Yellow Hookneck Squash | 6/12/2010 |
| Q: For the 2nd year my squash, after it matures & is producing fruit, starts to wither & die.The ... A: Howard: Couple of possibilities (1) Stem rot. This is a fungus. The bark of the lower stem gets dark ... | |
| sick Acer | 6/12/2010 |
| Q: I have a mature, established Acer which has been experiencing dieback for the last two years. ... A: Anna: If you are experiencing dieback with loose bark, this may indicate some level of internal ... | |
| Tree diseases | 6/11/2010 |
| Q: My neighbour has a Lime tree that is displaying very strange pink/red stalagmite pillars growing up ... A: Sally: Your description sounds much like a type of insect gall. There are many insects and mites ... | |
| Plant disease | 6/11/2010 |
| Q: I have my old apple orchard which is dying,i am planning to uproot the old site,what practise should ... A: Vivek: Some good disease and insect prevention- if your community permits burning of waste, I ... | |
| Pland disease | 6/11/2010 |
| Q: Leaves of my apple trees are turning yellow resulting in premature defoliation and in fruit ... A: Vivek: Many things can cause these symptoms. Be sure first that you have plenty of moisture in the ... | |
| clear drippy stuff on juniper bushes | 6/11/2010 |
| Q: my very large and very old juniper has developed a clear drippy substance on the tips. What is this ... A: If this substance is clear and sticky, then it may be a substance called honeydew. Honeydew gives ... | |
| Crystal like formation around trees & plants | 6/10/2010 |
| Q: I have a very strange crystal like formation around my cherry tree, tomato plant, zucchini plant, ... A: Houda: I'm afraid that I do not know what this material might be. Consider collecting some of this ... | |
| Magnolia tree dying | 6/10/2010 |
| Q: Magnolia tree planted 10 mos. ago. So. Cal. Sandy soil. Other mags have done nicely in this soil. ... A: Alan: Examine the lower trunk for any loose/damaged bark. If present, this may indicate physical ... | |
| arborbvitae | 6/10/2010 |
| Q: we have many arborvitae lining our property (up to 40 years old in maturity). lately they have ... A: Alison: I suspect that this is an insect injury of sorts. This isn't a disease. If feasible, it ... | |
| Japanese Maple | 6/9/2010 |
| Q: I have a J. Maple approx 20+ yrs. never a problem. this year, the leaves around the circumference ... A: Mark: This does not sound like a pest issue, but perhaps an environmental one- possible early ... | |
| Shademaster Locust Leaf Drop | 6/8/2010 |
| Q: I emailed you yesterday about our locust tree that sheds the entire season. You asked me to send a ... A: I showed your photo to my next door neighbor and unfortunately he wasn't able to give us a positive ... | |
| vinca | 6/8/2010 |
| Q: this is our first time planting vinca, my husband planted them several weeks ago and they are dying. ... A: Chantel: These plants need a well-drained soil. Avoid too much water- just moist to the touch. If ... | |
| plants in my green house dying | 6/8/2010 |
| Q: I hope you can help I'm having lots of problems this year with plants in my green house dying, all ... A: Ken: If your compost is a commercial product, it is unlikely that there is any contaminant that may ... | |
| magnolia tree | 6/8/2010 |
| Q: Our 4 year old magnolia tree has been dropping leaves for a few months and has dry scaly growths on ... A: Karen: Some leaf drop is normal-mostly interior leaves, but excessive drop may indicate other ... | |
| dying leaves on my southern magnolia tree | 6/7/2010 |
| Q: I have a southern magnolia tree %26 virtually the biggest part of the leaves look dead, there are a ... A: Paula: You can try a general granular tree fertilizer. Just check in with your local garden ... | |
| holly bushes | 6/7/2010 |
| Q: I have at least 18 holly bushes in front of my house I have had them for 15 years they are huge! I ... A: You are welcome to send me a photo of this white stuff. Try to get as close as you can to the leaves ... | |
| Messy Locust Tree | 6/7/2010 |
| Q: We've had issues with this tree for years, but now that we have a beautiful new deck we'd really ... A: If you are concerned about the insects, try to take a closeup photo and send to me. Try to get as ... | |
| oak tree disease | 6/6/2010 |
| Q: I recently asked Jim Hyland questions regarding our mature oak trees. (Illinois) He answered that it ... A: Lydia: These critters usually "snip" off twig tips and they fall to the ground. In my part of the ... | |
| clematis question | 6/6/2010 |
| Q: every year my clematis blooms beautifully, then all flowers immediately fall off and leave the ... A: Carolyn: Doesn't sound like an insect nor a disease. Review any chemicals that may have been sprayed ... | |
| cut leaf golden elder | 6/6/2010 |
| Q: I have a cut leaf golden elder that has clusters of black eggs in the branch junctions. These eggs ... A: Susan: You need to go to work for National Geographic!! Your photo was beautiful. These are aphids. ... | |
| plants in my green house dying | 6/6/2010 |
| Q: I hope you can help I'm having lots of problems this year with plants in my green house dying, all ... A: Ken: Did you buy your compost through an individual or is it a bagged/commerically manufactured ... | |
| black growths on plum trees | 6/5/2010 |
| Q: There are black growths on our plum trees. The growths can be almost described as warts. The trees ... A: Rosemary: There is a common fungus disease that you can use your computer to see. Look for pictures ... | |
| Yew Problem | 6/5/2010 |
| Q: I probably have more than 40 yews planted throughout my yard and noticed as I was fertilizing them a ... A: John: From your description, I suspect an insect- perhaps a type of scale insect. Try to snip off a ... | |
| ash tree problems | 6/5/2010 |
| Q: How do you treat the worms that infest the ash trees? We've done almost everything and they still ... A: Esther: Sounds like those critters that make a web on the tips of the branches- correct? If so , ... | |
| white spots on back of maple tree leaves | 6/5/2010 |
| Q: I live in Suffolk county, long island, new york. I have a gorgeous maple tree (approx 40') in my ... A: Carmela: These look like a type of scale insects, possibly cottony cushion scale. Carry a few leaves ... | |
| scale in burford holly tees and nellie stevens | 6/5/2010 |
| Q: what is the best way to treat scale in my hollies, they are infested with scale, will they recover, ... A: Don: There is an insecticide that you may try called BAYER ADVANCED GARDEN TREE AND SHRUB INSECT ... | |
| Meyer Lemon | 6/4/2010 |
| Q: I live in lower Alabama. I have a Meyer lemon in my yard. It is about six yrs. old. This last ... A: Bobbi: If this "discoloration" will wipe off with a wet finger or wet paper towel and looks black, ... | |
| plants in my green house dying | 6/4/2010 |
| Q: I hope you can help I'm having lots of problems this year with plants in my green house dying, all ... A: Ken: There are a lot of possibilities here. Best if someone could visit your GH in person to size up ... | |
| re: Ash Tree | 6/4/2010 |
| Q: I have an Ash Tree that is about 8 years old. At the end of last year I found clusters of what ... A: Roberta: Can you send me a picture of these clusters for me to look at? Try to take a closeup shot ... | |
| chanticleer pear tree | 6/4/2010 |
| Q: The chanticleer pear tree on my property was planted approximately 4-5 years ago. It did well the ... A: Diane: Pale leaves can indeed be an indicator of poor fertility or other root related issues. See if ... | |
| Tree disease | 6/3/2010 |
| Q: I have a large blossom tree in my garden (possibly cherry blossom) which has had all its leaves ... A: Alison: Soils composed of sand do have a higher incidence of drought, so you might pay particular ... | |
| mold | 6/3/2010 |
| Q: My apricot tree trunk has a white (looks like mold) all over it-I found the apricot themselves have ... A: Dr Edie: This mold on the tree trunk may be superficial or an indication of decline. It would be ... | |
| cut leaf golden elder | 6/2/2010 |
| Q: I have a cut leaf golden elder that has clusters of black eggs in the branch junctions. These eggs ... A: Great to hear from someone in Canada! In order to give you an accurate answer and some management ... | |
| Autumn Blaze Maples | 6/1/2010 |
| Q: I have 4 autumn blaze maples. They were planted in late March by a landscaper. 2 of the trees are ... A: Tony: As temperatures rise and rainfall gets less, fewer and fewer spots will form. Newer leaves may ... | |
| david phlox | 6/1/2010 |
| Q: when planted leaves were fine. Now lowerleaves yellow and have light speckling. A: Claire: Can you send me a closeup photo of the speckling? Review your image on your computer first- ... | |
| Crookneck Squash Question | 6/1/2010 |
| Q: The vast majority of my squash fruit has been very tender and pleasant. I have, however, noticed a ... A: Ben There are a virus diseases that may cause the "bumpy" texture. Using Google Images on your ... | |
| Flowering Pear Tree | 5/31/2010 |
| Q: What would cause the leaves on the tree to turn brown. This is happening all over the tree. The ... A: Rose: Here in Arkansas as well as several SE states have noticed over the last few years a condition ... | |
| maple tree white spots underleaf | 5/31/2010 |
| Q: My maple tree is apppearing healthy , but has many numerous white spots powdery looking, on all of ... A: These spots may be an insect. Can you send me a closeup photo of a leaf? Review your image on your ... | |
| Chitalpa | 5/30/2010 |
| Q: I live in Albuquerque, New Mexico and I planted a Chitalpa in my back yard three years ago. It only ... A: Angela: Hope your are referring to a Catalpa. You can remove the bare branches if they are dead. ... | |
| Red Oak Diseases | 5/30/2010 |
| Q: We live on a forrested mountain side and have a mature red oak which has recently started showing a ... A: Diane: This sounds like a bacterial disease called Bacterial Wetwood/Slime Flux. Take a look at ... | |
| Potato Leaf Problem | 5/30/2010 |
| Q: I have a problem with only one of the four types of potato I am growing in large fabric tubs. I have ... A: Margaret: It is my understanding that Roundup (when applied correctly) will not do this distortion ... | |
| White Crabapple | 5/30/2010 |
| Q: My Crabapple has been dropping leaves, I planted this tree four years ago and have not seen any ... A: Bruce: Difficult to say what may be causing leaf drop. Sometimes if there is a rather ... | |
| Ask for the disease | 5/30/2010 |
| Q: citrus if given water regularly in summer, what would be the effect of the sunlight when ... A: Shahid: Absorption of light in the infared region of the spectrum may caused some heating of plant ... | |
| Potato Leaf Problem | 5/29/2010 |
| Q: I have a problem with only one of the four types of potato I am growing in large fabric tubs. I have ... A: Margaret: These symptoms of cupping/leaf distortions can most likely be caused by one of two things- ... | |
| Autumn Blaze Maples | 5/29/2010 |
| Q: I have 4 autumn blaze maples. They were planted in late March by a landscaper. 2 of the trees are ... A: Tony: Too much water can be a problem just like not enough. No need to wet the leaves, just soil ... | |
| Maple Tree Leaves have small spikes | 5/29/2010 |
| Q: My Maple tree is distressed for the 2nd year.....it has tiny spikes embedded in the leaves and the ... A: Bruce: From your description, these tiny spikes on the leaves are probably a type of plant gall ... | |
| Maple Spindle Gall? | 5/28/2010 |
| Q: I live in Southeast NH and have some beautiful Maple trees in my backyard, though I don't exactly ... A: Martha: I do not recognize a disease nor characteristic significant insect from your image. Some of ... | |
| Maple Spindle Gall? | 5/28/2010 |
| Q: I live in Southeast NH and have some beautiful Maple trees in my backyard, though I don't exactly ... A: Martha: Take a look at several of these "eaten" leaves for any black areas or spots that seem to ... | |
| Maple Spindle Gall? | 5/28/2010 |
| Q: I live in Southeast NH and have some beautiful Maple trees in my backyard, though I don't exactly ... A: Martha: The gall insects, in this case I believe a mite, usually do not have a significant impact in ... | |
| Burford Holly | 5/28/2010 |
| Q: Tree is 15ft height, trunk about 20" plus 30 to 35 years old. This year more blooms than ever. Bees ... A: Marlene: Even though these plants are quite cold hardy, a fairly sudden drop in temperatures may ... | |
| Krauter Vesuvius | 5/27/2010 |
| Q: I recently noticed spot on the leaves of my purple leaf plum. The spots look as if the leaf is ... A: Can you send me a photo of a leaf with this spot on it? Try to get as close as you can to take the ... | |
| peach trees | 5/25/2010 |
| Q: young tree lots of fruit,leafs are falling off the tree,they are not turning color or curling,this ... A: Robert: Any sudden or drastic drops in nightime temperatures that may have preceded the leaf drop? ... | |
| japanese red maple | 5/25/2010 |
| Q: I had this tree for 20 yrs and never had a problem this year I notice the leaves are wilting and ... A: Marylou: Some things to start with.. Look the tree over the best you can for evidences of loose or ... | |
| while mold on bark of peach tree | 5/25/2010 |
| Q: I have a peach tree that has white mold on the bark. It started out just a small spot and now it is ... A: If the tree is doing fine otherwise, I suspect this may be a superficial issue-cosmetic. If you are ... | |
| weeping willow | 5/25/2010 |
| Q: We planted a weeping willow in very moist clay soil near our pond located in Belmont, Vt. It did ... A: These trees prefer a relatively consistent source of water thus they are often seen alongside of a ... | |
| Re: problems with lilac trees | 5/25/2010 |
| Q: We have problems with our lilac tree. I live in Quebec, on the south shore of Montreal. On one ... A: Juanita: I don't think that the splotches are related to the leaf curl unless they are a residue ... | |
| Black gum on leaf & trunk Key lime | 5/24/2010 |
| Q: I am a farmer in the Bahamas, I have a small crop of key limes, the trees have not been doing well ... A: Anthony: The gum presence on the trunk may represent an injury to the bark. The injury can sometimes ... | |
| RE: Pachira aquatica | 5/24/2010 |
| Q: I inherited a pachira aquatica 5' that sits in the enclosed back room, had it a year. Today I ... A: Stephanie: Thanks for the photo. This liquid does not look like anything related to a danger ... | |
| Plum Tree | 5/24/2010 |
| Q: I live in West Texas. All fruit trees were planted 3 yrs. ago...2 plum, 2 peach, 2 apple and 1 pear. ... A: Jon: The black stuff may be sooty mold, especially if it wipes off the leaf with a wet paper towel ... | |
| Ficus Lyrata | 5/24/2010 |
| Q: I have a ficus lyrata which has recently displayed red spotting and red veins. I have also noticed ... A: Emily: The leaf symptoms shown in your photo do not resemble an infectious disease but rather a ... | |
| Carrotwood tree | 5/23/2010 |
| Q: We have a mature carrotwood tree that has been pruned several times with no problems. However, ... A: Paul: The pale color may be due to a fertilizer imbalance (too much or not enough) or other root ... | |
| Diseased lilac tree | 5/23/2010 |
| Q: We have a white lilac tree which is over twenty years old. During that time it very rarely has ... A: Ann: Take a close look at the main trunk and the area near the base of the tree for any evidence of ... | |
| Jap red maple tree | 5/23/2010 |
| Q: Could you please tell me what to do about my Japanese red maple, I have a large section in only the ... A: Elizabeth: If you suspect an injury from a spray, not much to do except wait. If you suspect a ... | |
| Apple disease | 5/23/2010 |
| Q: Leaves of my apple trees are shrinking,i think due to hot temperature,fruits are weathring what to ... A: Vivek: If the tree is well established in the ground, take a look at the base of the tree for any ... | |
| Italian Cypress trees | 5/22/2010 |
| Q: I have an Italian Cypress tree which is showing brown inside the canopy but I did not detect ... A: Alan: Some browning and thinning of the interior can be normal as a result of shading of the ... | |
| pachira aquatica | 5/21/2010 |
| Q: Wondering if I have a problem with my plant. I have been noticing tiny clear sticky droplets ... A: Nancy: An insect presence would be my first guess, but since you do not see any insects then I do ... | |
| Sky Pencil Holly rapid leaf drop | 5/21/2010 |
| Q: I live in southern Texas. Three months ago I planted numerous Sky Pencil Holly trees and a few ... A: Michelle: From your photo, looks like water/drainage may be or has been an issue. Looks as if water ... | |
| camellias | 5/21/2010 |
| Q: I have a lovely pink camellia and it usually is full of flowers in the early spring . This year was ... A: See if the black stuff rubs off the leaves using a wet paper tissue or wet finger. If it does, then ... | |
| Holly Plant problems | 5/21/2010 |
| Q: Some of our Holly plants have leaves which are browning at the tips. Others have leaves that are a ... A: Meadowbrook; Several things can cause these symptoms that you are describing. Most of them are ... | |
| RE: Pachira aquatica | 5/20/2010 |
| Q: I inherited a pachira aquatica 5' that sits in the enclosed back room, had it a year. Today I ... A: Next week will be fine. You may have to remind me about the sticky stuff when you send the photo- my ... | |
| RE: Pachira aquatica | 5/20/2010 |
| Q: I inherited a pachira aquatica 5' that sits in the enclosed back room, had it a year. Today I ... A: Stephanie: Can you send a photo of this whitish stuff? Try to get as close as you can to a leaf to ... | |
| Sky Pencil Holly rapid leaf drop | 5/20/2010 |
| Q: I live in southern Texas. Three months ago I planted numerous Sky Pencil Holly trees and a few ... A: The symptoms that you describe may be due to an unfavorable root environment. This can be produced ... | |
| blood good jap maple | 5/20/2010 |
| Q: I have had my blood good for 16 years and for the first time i have had it, it has yellow and brown ... A: Patrick: Thanks for the photo. This is a leaf spot often referred to as maple anthracnose. It is ... | |
| Red bugs | 5/20/2010 |
| Q: I live in San Antonio Tx. I noticed both last and this year in March/April bugs on our Crepe Myrtle ... A: Robert: No problem. You can send a photo anytime. You can always check your next door neighbor's ... | |
| Bradford pear bloom then no leaves | 5/19/2010 |
| Q: i have a bradford pear in the back yard that bloomed in the early spring as normal, dropped the ... A: David: This tree may be exhibiting symptoms of a disorder that has been termed "Pear Decline". This ... | |
| Silver maple - Sparse Leaves | 5/19/2010 |
| Q: I have a silver maple that I planted 3 -4 years ago. It's been doing great until this year when the ... A: Mike: In the meantime, you are welcome to take and send a photo of this area in question. If you do, ... | |
| Silver maple - Sparse Leaves | 5/19/2010 |
| Q: I have a silver maple that I planted 3 -4 years ago. It's been doing great until this year when the ... A: Mike: Check a couple of things. Look at the trunk for areas where the bark may have been damaged or ... | |
| Norwegian Sunset Maple leaves not opening | 5/19/2010 |
| Q: We have a 3 1/2 yr old Sunset Maple whose leaves didn't open this year. Some of the leaves on the ... A: Laura: I would doubt that the plant roots underneath would cause this. If you had a night or two ... | |
| Red bugs | 5/18/2010 |
| Q: I live in San Antonio Tx. I noticed both last and this year in March/April bugs on our Crepe Myrtle ... A: Robert: A picture of these critters could be of great help. Can you take a closeup of one and send ... | |
| weeping mulberry tree male-no fruit | 5/18/2010 |
| Q: The tree is 4 yrs old, I live in Western NY. Late April brings the green leaves. May 17th, I ... A: Difficult to say what is going on here w/o seeing the tree in person. Things to look for. Using your ... | |
| Schefflera tree | 5/18/2010 |
| Q: I've got an indoor schefflera tree that seems to be getting very sticky gooey leaves (and the floor ... A: Stan: You are welcome. Be sure to check on the under surface of the leaves for these insects. They ... | |
| Schefflera tree | 5/18/2010 |
| Q: I've got an indoor schefflera tree that seems to be getting very sticky gooey leaves (and the floor ... A: Stan: This "sticky" stuff sounds like honeydew. A product of an insect that is feeding on this plant ... | |
| blood good jap maple | 5/17/2010 |
| Q: I have had my blood good for 16 years and for the first time i have had it, it has yellow and brown ... A: Patrick: There are a variety of agents that can cause leaf spots. Could you send a photo of these ... | |
| white birch tree | 5/16/2010 |
| Q: in early spring my white birch developed leaf buds but they never opened and now are falling off can ... A: Brian: I suspect the tree may have been subjected to a possible temporary stress. Possible sudden ... | |
| wisteria scale | 5/16/2010 |
| Q: I've just come home from one night away and found my wisteria half dead. I've had a close look and ... A: Scale insects can be a real "pain". They make their living by sucking the plant juices from the ... | |
| Japanese dwarf red maple tree disease | 5/15/2010 |
| Q: Could you please tell me what is happening to my tree, I have a large section in only the front of ... A: This does not sound like a bug or disease. Has anything been sprayed on the tree or poured on the ... | |
| mango tree | 5/15/2010 |
| Q: my daughter has a mango tree, which recently sent up quite a few flower stems, which were covered ... A: Thelma: I am assuming that this tree is not a new tree, but has been established in the soil for ... | |
| pony tail palm | 5/14/2010 |
| Q: Leaves are drying up (brown/rust in color) from tips inward. Also some browning on tips of new ... A: Leaf tip browning can be caused by many things. Often it is an unfavorable root environment rather ... | |
| Meyer Lemon Tree | 5/14/2010 |
| Q: and thank you for your time. I have a Meyer Lemon Tree that is approx. 2 years old. It is just ... A: Tracey: The vinegar is an acidic solution that may injure tender portions of the plant. Depending ... | |
| Lawn Problem | 5/13/2010 |
| Q: Many thanks for your help! By way of introduction, I'm a physician with a lot of education in the ... A: Steven: I do not suspect a disease nor insect that is causing this, but rather some animal, possibly ... | |
| roebellini Plant with off-white/greyish eggs in the soil | 5/10/2010 |
| Q: I just bought two new roebellini plants for my patio and noticed within a week that one had small ... A: Meaghan: I do not suspect insect or disease related. Could this have been a bird's egg? I suspect ... | |
| honeysuckle | 5/10/2010 |
| Q: I live in northwest Montana, I have 2 honeysuckle plants for the first few years after planting they ... A: Brad: Difficult to say w/o examining a physical specimen. Consider having a soil sample tested for ... | |
| Holly infestation | 5/10/2010 |
| Q: I saw your answer to another question on this. I have two holly bushes and they seem to have black ... A: One insecticide choice to consider is Bayer Advanced Tree and Shrub Insect Control. It is applied to ... | |
| camellia disease | 5/9/2010 |
| Q: We have a 10+ Yrs old camelllia in Savannah, GA that now has some leaf disease. Pictures are at ... A: Sandy: Scale insects are the issue from photo #2 and some of the leaves in photo #1. The large brown ... | |
| jasmine plany disease | 5/9/2010 |
| Q: Jasmine plant growing in a desert climate (Las Vegas) This spring some leaves show a reddish ... A: Joe: Difficult to say w/o seeing some of these leaves since many things can cause spots. Can you ... | |
| Leafless Fruitless Mulberry Tree | 5/9/2010 |
| Q: We have a very old fruitless mulberry tree that was very green and lush when we first moved in to ... A: The presence of the dead branches and "thinning" foliage, I would suspect some level of internal ... | |
| non blooming yoshino cherry tree | 5/7/2010 |
| Q: We have two yoshino cherry trees. One on either side of the drive. One tree has bloomed and is full ... A: Ray: This one is a head scratch-er for me. I am assuming that both trees have budded out together in ... | |
| Japanese Maple | 5/6/2010 |
| Q: We planted a Japenese Elm approximately three years ago and it has grown well each year. This year ... A: Chaz: If it is showing signs of leafing out, you should be OK. Scratch a few smaller twigs with ... | |
| Ficus tree | 5/6/2010 |
| Q: My ficus froze this winter so we decided to trim back the limbs. The only problem is that now is ... A: Elizabeth: I am assuming the ficus has some green tissue on it after the trimming. There is a black ... | |
| CRINKLEY leaves on meyers lemon | 5/6/2010 |
| Q: I have a potted lemon tree that the leaves crinkle and then they fall off. Is it a virus and is ... A: Good Morning Charles: There might be several reasons for the distorted leaves, but a virus disease ... | |
| oleander in SC -leaves are yellowing | 5/5/2010 |
| Q: my neighbor asked me about her oleander, the leaves are yellowing and dropping. I check for any of ... A: Leaf shed can sometimes be caused by numerous things. This time of year, maybe a rather sudden drop ... | |
| Spotted Discoloration on all Plants | 5/5/2010 |
| Q: Dr. Vann, Today we noticed light whitish-tan colored spots on the leaves of virtually every plant ... A: Brandon: Yes, it is possible, especially if it was mixed inappropriately and resulted in injury. ... | |
| Spotted Discoloration on all Plants | 5/5/2010 |
| Q: Dr. Vann, Today we noticed light whitish-tan colored spots on the leaves of virtually every plant ... A: Brandon: Since there are lots of apparently unrelated plants with the same symptoms, I would not be ... | |
| saga palm gel | 5/4/2010 |
| Q: i have a clear gelatin substances on the end of the cut limbs of my saga palm, it is clusters it is ... A: Olivia: I suspect that this material is from the plant in response to the injury from the cut. It is ... | |
| holly bushes | 5/3/2010 |
| Q: our holly bushes have a large number of leaves that are turning brown, dry, and brittle while their ... A: John: The brown leaves and black stems indicate that the tissue has probably died and becoming ... | |
| lemon & apricot diseases | 5/3/2010 |
| Q: 1. My 3 yr old dwarf lemon tree has never had fruit & now some of the leaves are "curling" & ... A: Cindy: Some insects that feed on the leaves can cause it to curl. Take a close look along the veins ... | |
| Poplar Tree | 5/3/2010 |
| Q: I have a poplar tree my grandfather planted about 50 years ago that appears to be on its way out. It ... A: D: This tree may have some level of internal decay, a slow yet progressive decline. This decay can ... | |
| Galls on maple leaves | 5/2/2010 |
| Q: My daughter is a tree climber, and her favorite tree is the maple tree. She recently noticed the red ... A: Olga: There are many insect galls that can be out there. They are usually insignificant to the ... | |
| Yellow leaves on sago palm | 5/1/2010 |
| Q: We have 2 Sago palms which have some yellow leaves. Is this a situation where the soil is not acid ... A: Othell: Yellowing of leaves can be caused by a number of things. Usually it is a soil/root related ... | |
| aliens taking over my Oak Tree?? | 5/1/2010 |
| Q: What are these things please. I thought maybe they were wasp galls, but am not so sure.. I don't ... A: Rebecca: This is an insect gall called a horned oak gall. Caused by a small wasp that lays an egg on ... | |
| Growths on Oak Tree | 5/1/2010 |
| Q: We have just moved to a home in Northern California with a large, mature oak tree that has nodules ... A: Suzanne: These may be one of many types of insect galls which are caused by small wasps. If this ... | |
| lilac problems | 4/30/2010 |
| Q: My lilac branches appear to be dying. They have a sort of greenish-grey spotted coating on them. The ... A: This coating that you describe may be lichens growing on the bark that we can see on older or ... | |
| lilac bushes | 4/30/2010 |
| Q: I live in west central Wisconsin. Spring has arrived early this year and I have noticed on several ... A: A drop in temperatures can indeed injury tender parts of a plant that are in the process of "coming ... | |
| persimmon tree disease | 4/30/2010 |
| Q: my Fuyu Persimmon tree about 10 year old, has been giving great fruits. we live zone 7 ( ... A: Badruz: Your description sounds much like a type of insect pest called a scale insect. These are a ... | |
| Forsythia disease | 4/28/2010 |
| Q: We have two forsythia bushes in our landscaping, both of which have curly new growth that doesn't ... A: Ashley: From your description, I do not think that this strange growth is caused by an insect or ... | |
| Willow disease | 4/28/2010 |
| Q: Good morning Dr. Vann, My mother has a willow in her front yard that is not blooming this year. She ... A: The first thing that comes to my mind in your description is a bacterial infection that can affect ... | |
| emerald green arborvitae | 4/28/2010 |
| Q: I planted 10 emerald green arborvitae in a row to seperate my property. 8 out of the 10 trees ... A: Jeff: I am assuming these were planted recently and that the same side of the 8 trees turned brown. ... | |
| ornamental lemon tree | 4/27/2010 |
| Q: about 4 inches above the soil line on the trunk there is some orange goo oozing out of it, then gets ... A: Donna: From your description, I would suspect that this substance is plant in origin, probably a ... | |
| rug juniper | 4/26/2010 |
| Q: I live in Buffalo NY and just noticed that my blue rog junipers have an orange colored "gel like ... A: Mark: Could you send me a photo of this "blob". I have an idea of what this is , but would like to ... | |
| weeping willow tree | 4/26/2010 |
| Q: Vann,We have a weeping willow about 15yrs or more old that has 3 areas about 1 foot up from bottom ... A: Diane: This sounds like a bacterial infection called Bacterial Wetwood or Slime Flux. Take a look at ... | |
| peach tree/ fruit problem | 4/26/2010 |
| Q: I have some young peach trees and this is the first time that they are baring fruit. The peaches are ... A: The sticky exudate from the holes is material from the immature fruit. It is a response to injury- ... | |
| is my tree dead? | 4/26/2010 |
| Q: I live in central Alabama. I have 4 dwarf magnolias in the backyard. I noticed that one of them ... A: Pamela: Try scratching the bark in a few suspect areas with your fingernail. Look for green beneath. ... | |
| ornamental plum tree | 4/25/2010 |
| Q: my ornamental plum tree has gone dormant (or dead) for no apparent reason. we are a month past ... A: Maureen: I am not aware of an insect or disease that could do this so quick as you describe. This ... | |
| Spiders/webs hedges | 4/25/2010 |
| Q: I have hedges along the front of my house. Every spring it gets covered in spider webs and stays ... A: Michael: Spiders should not cause a problem, other than cosmetic. They may be there for a regular ... | |
| Weird growth on Oak trees | 4/25/2010 |
| Q: There are several oak trees on our property and I've noticed golf ball size fuzzy balls with red ... A: Christy: This sounds like an insect gall called a wool sower gall. It is caused by a tiny gall ... | |
| crepe myrtle trees | 4/25/2010 |
| Q: I have 5 crape myrtle trees planted on the side of my yard and 6 planted in the front. I planted ... A: Trish: If these twigs that fall are green and tender, then this is not an insect or disease , but a ... | |
| Emerald Green Arborvitae (how to repair damaged trunk) | 4/24/2010 |
| Q: Just planted several Emerald Green Arborvitae which I boutht from Lowe's in my home state of ... A: Renee: Depending on the severity of the cut, this could spell trouble down the road. An open area ... | |
| Holly Tree Disease | 4/24/2010 |
| Q: I have a large holly tree. It has red berries and bloomed this spring, however, it now is dropping ... A: John: If the black stuff will rub off the leaf with a wet finger or paper towel, this is called ... | |
| burford holly leaf drop | 4/23/2010 |
| Q: "I have a small holly, I think burford, which is dropping new leaves (new growth this year, in ... A: Ralph: I don't think this may be a disease, but rather some type of temporary "shock". Have you had ... | |
| Aspen Tree Leaf Disease | 4/21/2010 |
| Q: We have several Aspens which last year developed a black, dry looking condition on the leaves. It ... A: There are a few leaf spot possibilities that are all fungal in nature. The one I am thinking about ... | |
| Maple Tree.Dieback but producing heavy seed | 4/21/2010 |
| Q: 04/21/10 Southern Indiana--My neighbor has a sugar maple that has an area towards the crown with ... A: Lee Ann: I do not suspect a disease nor insect. This may be a possible environmental stress such as ... | |
| yucca plants | 4/21/2010 |
| Q: I live in Buffalo, NY and have many yucca plants surrounding my pool area. I have lived in this ... A: Larissa: This is a puzzle. Check the bases of the plants for any unusual appearance such as ... | |
| dying pin oak | 4/20/2010 |
| Q: I have a pin oak about ten years that appears to be dying. It has kill all grass in a perfect ... A: William: If this tree looked good last year, something rather than a disease or insect may be the ... | |
| tulip tree disease | 4/20/2010 |
| Q: We live in the Knoxville, TN area. We have a tulip tree that is approximately 10 years old. The ... A: The tulip tree is my all time favorite! Sounds like you have two separate issues. The small holes ... | |
| Dying Maple Tree | 4/20/2010 |
| Q: We've had a maple tree for several years and it's grown well. Last year, it started to get spots on ... A: Sharon: The browning may be a result of a temporary stress such as a heat/drought situation. Try ... | |
| Yew losing bark | 4/18/2010 |
| Q: we have well watered and fed (acidic fertilizer for evergreens) Yew shrubs that are planted near our ... A: Chris: If the bark has been removed around a stem, this may be a terminal situation for the ... | |
| Rosemary | 4/17/2010 |
| Q: My outdoor Rosemary bushes have little cotton ball-like growths on them. Maybe spider eggs? ... A: Karen: A photo can be very useful to identify. Try to get as close as you can, make the shot and ... | |
| christmas palm | 4/17/2010 |
| Q: I've had a Christmas palm tree for just over a year. Last winter, it was kept indoors in a brightly ... A: Jodi: Some of the palms are quite sensitive to colder temps. Check to be sure the soil has dried out ... | |
| Disease on Miniature Acer Shrub | 4/17/2010 |
| Q: I have a Miniature Green Acer shrub in my garden. I've noticed a gray/white scaly growth on the ... A: Rita: Thanks for the photo. As you may have heard a picture is worth a 1,000 words. These gray ... | |
| tall phlox | 4/16/2010 |
| Q: Could you tell me why the bottom leaves on my tall phlox (David,Laura,and Nikki) are turning yellow ... A: Kitty: If the whole leaves are turning pale green then yellow with no spots or lesions, I doubt if ... | |
| Dying Maple Tree | 4/16/2010 |
| Q: We've had a maple tree for several years and it's grown well. Last year, it started to get spots on ... A: Sharon: If the original spots that you saw were black first then brown later, this may be a disease ... | |
| White spots and Curled leaf stems on Lilac | 4/15/2010 |
| Q: This past winter I noticed these white spots on the bark of my lilac. This spring, the leaves came ... A: Jackie: I suspect that these white spots may be a superficial fungus/algae like a lichen. These are ... | |
| garden | 4/15/2010 |
| Q: What are some diseases that affect crepe myrtle? A: Sun: Here in the U.S., Powdery Mildew and Cercospora leaf spot are the most significant infectious ... | |
| White spots and Curled leaf stems on Lilac | 4/15/2010 |
| Q: This past winter I noticed these white spots on the bark of my lilac. This spring, the leaves came ... A: Sounds like you may have two separate issues. White spots on bark and twisted leaves/blooms. I do ... | |
| Trachycarpus fortunei yellow leaves | 4/14/2010 |
| Q: I have one of these that stansd around 10' tall and has been beautifull to look at over the years ... A: Yellow leaf tips may indicate a nutritional imbalance or other possible root related stress. Suggest ... | |
| leaf spots | 4/14/2010 |
| Q: Are there any household products out there that will help with the treatment/ prevention of leaf ... A: Sandra: I am not aware of any documented references from university or company tests- only hearsay ... | |
| azaela rust | 4/13/2010 |
| Q: My azealas leaves will turn a reddish color or they turn pale green almost white. The entire plant ... A: Elec: Can you send a closeup photo of 1-2 representative leaves showing the color features? Try to ... | |
| Sooty Arborvitae | 4/13/2010 |
| Q: Two years ago we planted 20 4 foot emerald green arborvitae. We water once a week for 6 hours with ... A: John: You may have a foliar disease. There are several fungal organisms that can attack the leaves. ... | |
| pomgranate bark desease | 4/12/2010 |
| Q: w to cure bark rot A: Edward: Many things can cause a bark problem- some may not be an bona fide infectious disease. It ... | |
| plum tree bark disease | 4/12/2010 |
| Q: I have a Wickson plum tree, about 25 years old and generally seeming to be in good health. About a ... A: Kate: Many things may be acting together or separately in your case. A diagnosis is impossible ... | |
| Ficus Hedge disease | 4/12/2010 |
| Q: I have a fichus hedge of about 20 trees. About five months ago I noticed some leaves were changing ... A: It's difficult to say w/o seeing the plants in person. Consider contacting your local county ... | |
| White scaley looking things on my Meyer Lemon Tree | 4/11/2010 |
| Q: I have a Meyer Lemon Tree in a pot......It grows fine outdoors...I have to overwinter it indoors as ... A: Sounds like an insect-- maybe scale. Contact our local county Extension office in LR 501-340-6650 ... | |
| judii viburnum trunk problems | 4/11/2010 |
| Q: my judii viburnum has been in my yard and flourishing for 5 years and now looks horrible - all major ... A: Deb: If this plant looked good last year, there is a possibility of cold damage (i.e. freeze). If ... | |
| Camellia Plants | 4/10/2010 |
| Q: The leaves on my camellia plants are turning very yellow, not the dark green shiny leaves they ... A: If the bushes has been planted for a year or two, I would be suspicious of a nutrient or other ... | |
| plum tree bark disease | 4/10/2010 |
| Q: I have a Wickson plum tree, about 25 years old and generally seeming to be in good health. About a ... A: Kate: Good fertilization schedules (based on a recent soil test) plus avoiding damaging the bark ... | |
| american lilac | 4/7/2010 |
| Q: Last year my American Lilac was healthy and vigorous. Now, it is completely dark brown and looks ... A: Lorraine: Unfortunately,there are many things that can cause a decline as you describe. Doing tree ... | |
| fruitless mulberry tree disease | 4/7/2010 |
| Q: I have two fruitless mulberry trees the same age. I planted them 3 years ago at the same time. Last ... A: Sheila: Sounds like one of these trees is struggling a bit. Yellow leaves, brown edges and leaf ... | |
| Weeping Willow Trees with disease | 4/6/2010 |
| Q: We have a major issue with our weeping willows. We lost 5 of our Hybrid Willows to a disease last ... A: Cherri: Someone really needs to see these trees first hand to give an accurate assessment. In many ... | |
| magnolia tree | 4/6/2010 |
| Q: I just moved into a new house that has a small Magnolia tree in the center of the yard. It looks to ... A: Lisa: From your description, this tree sounds like "toast". If the tree has no mulch and has grass ... | |
| River Birch | 4/5/2010 |
| Q: Dr. Vann, I have planted River Birch in my yard for shade. I'm having problems with a Red Hard Shell ... A: Rick: I am not a good "bug person", but my next door neighbor is. Here are some homeowner product ... | |
| Holly | 4/4/2010 |
| Q: We live in Michigan and planted about 20 hollies last fall. Most of them look dried out and yellow ... A: Sharon. Transplant shock is a big factor in survival. Plants are vulnerable to this transition. It ... | |
| brown leaves on sego palm | 4/4/2010 |
| Q: We had a late freeze this winter - our Sego has been planted outside for over 20 years - and now the ... A: These browning leaves will eventually dwindle away. After you are sure that any frost danger is ... | |
| Oak root removal | 4/3/2010 |
| Q: I have 25' oak next to my paver patio and I'm suspecting that a large root is causing my patio to ... A: Don: It is difficult to say how much the root cutting/removal might jeopardize the overall health. ... | |
| crababpple and dogwood trees getting brown spots and losing their leaves over a period of time in early summer late spring | 4/1/2010 |
| Q: what can I do early in the seasonI have had these trees for at least 10-12 years, for the last two ... A: Edith: See this website for Extension Urban Horticulture. There are some telephone numbers at the ... | |
| citrus trees | 3/31/2010 |
| Q: The leaves on my citrus tree has almost completely fell off, leaving a brown and partially green ... A: Amir: Many things can cause leaf drop. Take a look at the roots. They should be white or cream ... | |
| crababpple and dogwood trees getting brown spots and losing their leaves over a period of time in early summer late spring | 3/31/2010 |
| Q: what can I do early in the seasonI have had these trees for at least 10-12 years, for the last two ... A: Edith: I am not familiar with the effectiveness of vinegar or dish soap. Not sure of any scientific ... | |
| crababpple and dogwood trees getting brown spots and losing their leaves over a period of time in early summer late spring | 3/31/2010 |
| Q: what can I do early in the seasonI have had these trees for at least 10-12 years, for the last two ... A: Edith: These trees really need to be examined in person to access the environment. If the past ... | |
| White spots | 3/30/2010 |
| Q: I have raised white spots, almost like little circular pods all over the limbs of my ornamental ... A: Eve: Thanks for your photo. These are scale insects. Called wax scale. Common on many ornamentals. ... | |
| crabapple disease | 3/29/2010 |
| Q: i have attached a photo of the tree. the galls are all along the trunk of the tree so i am worried. ... A: Kathy: Thanks for your comments! I enjoy hearing feedback (especially when it is good LOL!!). Hope ... | |
| growing problem | 3/29/2010 |
| Q: We have a magnolia tree for about three years that have not grow up.we have put termite medicin ... A: Sofia: Termites and carpenter ants do not typically invade living wood, so if they are present, ... | |
| Dying plant, blue wood bouganvilla died | 3/29/2010 |
| Q: After Hurrican Dolly came through the Rio Grande Valley I noticed my large bouganvilla suddenly ... A: Joan: The cause of the decline needs to be determined first. Someone may need to examine the plant ... | |
| Red-tip Question | 3/29/2010 |
| Q: I have a very large Red-tip that has started foaming (white) at the base of the trunk everytime it ... A: Mullane: These two problems are not related. This foaming is probably a disease called "slime flux" ... | |
| alovera plant disease | 3/28/2010 |
| Q: My healthy aloe vera plant is showing signs of rot. I brought it into the house for the winter. I ... A: Jan: This sound like a root and crown rot. Often, wet soils set the plant up for these groups of ... | |
| crabapple disease | 3/28/2010 |
| Q: i have attached a photo of the tree. the galls are all along the trunk of the tree so i am worried. ... A: Kathy: I got your two photos. This is not black knot as I mentioned earlier. These swellings can ... | |
| Red Sunset Maple | 3/27/2010 |
| Q: I have a Red Sunset Maple about 8 years old & I have just noticed three wounds on the trunk. The ... A: Ted: This wound can allow microorganisms inside the tree to create a decay situation. This decay ... | |
| Dying plant, blue wood bouganvilla died | 3/27/2010 |
| Q: After Hurrican Dolly came through the Rio Grande Valley I noticed my large bouganvilla suddenly ... A: This blue color is likely a pigment produced by a fungus within the stem. There are many fungal ... | |
| Ornamental pear treas | 3/26/2010 |
| Q: We have six trees planted in a row. Three of the trees next to each other have very few blooms and ... A: Joyce: Over the last few years, many people are becoming aware of some real "issues" with these ... | |
| Snowball bush | 3/25/2010 |
| Q: My husband hacked down my beautiful bush! Will it come back or is it gone forever? A: Jennifer: Difficult to tell. Generally, removing no more than 1/3 of the plant canopy is recommended ... | |
| Oak Tree dying? | 3/25/2010 |
| Q: I have a 7 year old beautiful oak tree in my front yard. The leaves have just turned brown and ... A: Cindy: New buds over the tree are a good sign. Thanks for letting me know. Be sure to keep the ... | |
| crabapple disease | 3/24/2010 |
| Q: our crabapple tree has these big black wart like growths on the tree branches. they appear like big ... A: These swellings may be insect type galls. To be sure, can you send along a photo of one of these ... | |
| Oak Tree dying? | 3/24/2010 |
| Q: I have a 7 year old beautiful oak tree in my front yard. The leaves have just turned brown and ... A: Did it leaf out and look good last spring? Here are a couple of things to check out. Take a close ... | |
| household plants | 3/20/2010 |
| Q: ok ive had this problem with my plants forever but recently i just got spider mites, i finally got ... A: Sending a closeup photo can help me ID these. I have a "bug person" that has an office next to me. ... | |
| Flowering Plum Pest | 3/20/2010 |
| Q: Late last summer I realized that my flowering plum was being devoured by some type of caterpillar (i ... A: Eric: There are a lot of caterpillar types that feed on the leaves of our plants. There are a few ... | |
| Holly disease | 3/19/2010 |
| Q: I live in NYC. I have two holly bushes which have developed about a 1/4 inch white raised spots ... A: Nancy: I suspect, based on your description, that you may have scale insects on the twigs/leaves. ... | |
| White Spots on Red Maple | 3/19/2010 |
| Q: My mature maple tree has white spots that just showed up this winter in the Chicago, IL area. They ... A: These white spots are a superficial fungus or algae, probably cosmopolitan, that is growing on the ... | |
| Camillia | 3/15/2010 |
| Q: Two camellias in front of my house have white powdery looking aphids underneath the leaves; they ... A: Jenenah: These may be truly aphids such as "wooly aphids". Use your computer in "Google Images" to ... | |
| Leaves falling off yucca tree | 3/14/2010 |
| Q: Good evening I live in england and we have recently suffered a terrible winter as a result of this ... A: Brian: Nothing much to do except be patient. Wait until the last chance of frost is passed, then ... | |
| sago palm scale | 3/14/2010 |
| Q: Our sago was infested with white scale, despite trying to treat the problem last season. My husband ... A: New fronds should form if the plant is happy where it is. The scale insects may need periodic ... | |
| Strange Growth on Tree | 3/12/2010 |
| Q: Could you please identify this growth that has been appearing on my tree? Thanks, Jess A: Jess: This does appear as a type of fungus (basidiomycete). These are the "gills" that we see and ... | |
| White leaves everywhere! | 3/10/2010 |
| Q: I moved into this house last July where my sister and her husband lived. The lawn was in terrible ... A: Mandy: I am not a weed killer expert, but did visit with a colleague on the following explanation. ... | |
| Plant leaves Brown | 3/8/2010 |
| Q: I have a collection of different plants, and it all started when I bought a poinsettia for ... A: Your question is a big one. There are a myriad of possibilities that can cause leaves to turn ... | |
| orchid plant | 3/4/2010 |
| Q: i purchased a beautiful small white phaelanopsis (spelling) plant a couple of weeks ago with lots of ... A: Thelma: Your description of the yellowing does not sound like an infectious disease. This may ... | |
| Foxtail and Silver Bismark Palms | 3/3/2010 |
| Q: I have 2 mature Fox tails that were planted about 6 months ago at my home in Palm Bay Florida. We ... A: Tim: This brown,elliptical area on the main stem looks like some type of physical damage/injury ... | |
| Tree with holes in the trunk | 3/2/2010 |
| Q: I have just noticed on a relatively small tree (small in contrast to my large maple right next to ... A: Martha: Woodpeckers may indeed be a likely cause. Can you send me a photo of this area of the ... | |
| Peach trees | 3/1/2010 |
| Q: I have a peach tree that had like a moss looking disease on some of the branches last year. The tree ... A: I don't think that the "moss" and spots on the fruit are related. The moss stuff sounds like a ... | |
| Italian Cypress Dying Inside | 3/1/2010 |
| Q: I have 12 Italian Cypress Tress lining my house and their insides are all brown and dying with a lot ... A: Joel: Many evergreens of this type normally shed their interior leaves as they mature. This is ... | |
| camellia disease ?? | 2/27/2010 |
| Q: I purchased a "Mine-No-Yuki" Camellia last spring. For 2009, my area (Zone 7B, central Arkansas) had ... A: Phyl: Thanks for your question. I do not recognize the spots that you describe as an infectious ... | |
| sap from hole in maple tree | 2/27/2010 |
| Q: I have an eighty year old red maple tree in my back yard. I have been taking care of it since I ... A: Joanne: Good Morning. I have been reading a lot about your part of the world getting snow. I hope ... | |
| Angel Trumpet leaf rust | 2/24/2010 |
| Q: My angel trumpet plant has a rust like substance on the leaves; I have tried washing them but it ... A: Rosalie: A couple of things to think about. 1st.-There is a fungus plant disease called literally ... | |
| bark peeling off in long sheets | 2/22/2010 |
| Q: I have a yellow Lady Banks climbing rose bush that is about eight years old. It stands about eight ... A: Althea: Thanks for the photo. This particular area looks quite deep into the stem. There looks to ... | |
| camellia disease | 2/18/2010 |
| Q: I live in Southern Ireland and planted a beautiful camellia plant 7 yrs ago. It is the white flower ... A: Good to hear from your part of the globe! The answer to your question- yes, it could be a reason. ... | |
| Tree fungus | 2/16/2010 |
| Q: I have a lot of water oaks that I've lost doe to a BLACK fungus, I have looked it up on the web and ... A: Pat: I believe it would be best to identify this stuff first. Can you send along a photo of the ... | |
| Citrus disease | 2/16/2010 |
| Q: The backs of the leaves of my blood orange tree are covered with many hard black dot-like insects ... A: Dorothy: I am not quite sure what these dots may be. Can you send me a closeup photo of a leaf or ... | |
| bark peeling off in long sheets | 2/15/2010 |
| Q: I have a yellow Lady Banks climbing rose bush that is about eight years old. It stands about eight ... A: Althea: I don't think this is any type of disease, but can you send a closeup photo of a section of ... | |
| tree bark damage | 2/13/2010 |
| Q: Can you help me identify what's hurting my tree and what I can do to repair the damage? Today is ... A: Katerine: This is bird damage- probably a yellow-bellied sapsucker- a type of woodpecker. These ... | |
| Plum tree disease | 2/12/2010 |
| Q: There are 30 fruit trees. two are plum trees. both have the same disease. Sticky amber colored sap ... A: Tasneem: Gum production is a defense mechanism that is common in the stone fruits like peaches, ... | |
| evergreen bush disease | 2/12/2010 |
| Q: My evergreens around my deck are dying. I trimmed them last summer and thought the rain would keep ... A: Lori: Most evergreen shrubs and trees like your various junipers, cypress, and arborvitae that have ... | |
| Kumquat Tree not bearing Fruit! | 2/11/2010 |
| Q: I have a Kumquat tree that I bought from Lowes Home Improvement Store about two years ago. I live in ... A: I do not think this is a potential disease or insect issue based on your description. It may very ... | |
| black sticky substance on cycad | 2/11/2010 |
| Q: I have a very mature cycad, probably 15 to 20 years old. It is a female plant. The leaves ... A: Karin: I do not recognize the substance as a disease related material. If the substance is dry or ... | |
| White mold killing my plants | 2/10/2010 |
| Q: I have a white mold which is spreading through many of my ferns. It attaches itself to the stems ... A: Brad: Can you send me a closeup photo of this stuff on the fern? Review it on your computer first- ... | |
| Diseases on Japanese Maples | 2/9/2010 |
| Q: A good friend and I love Japanese Maples and both have many. He has discovered clusters of small ... A: Dennis: After seeing the closeup you sent. You may consider carefully scraping a few of these apart ... | |
| Diseases on Japanese Maples | 2/9/2010 |
| Q: A good friend and I love Japanese Maples and both have many. He has discovered clusters of small ... A: Dennis: I do not recognize these structures as being an infectious disease organism, rather I ... | |
| distorted growth | 2/9/2010 |
| Q: I have a problem with distorted stems. The shoots become flattened and thickened at the end, and ... A: a: Most states have a plant disease/plant health diagnostic lab that is affiliated with the land ... | |
| distorted growth | 2/8/2010 |
| Q: I have a problem with distorted stems. The shoots become flattened and thickened at the end, and ... A: a. Flattened stems can be caused by several agents, including mycoplasmas or phytoplasmas. These ... | |
| Nashi Pear Tree | 2/7/2010 |
| Q: We have a beautiful Nashi tree which we planted 3 years ago. The pears are in plentiful supply and ... A: Dave: Examine the fruit closely. Look for any small entrance holes on the "skin" of the fruit and ... | |
| Diseases on Japanese Maples | 2/7/2010 |
| Q: A good friend and I love Japanese Maples and both have many. He has discovered clusters of small ... A: Dennis: I don't think these objects are related to a disease- maybe a superficial saprophytic ... | |
| White Scale on sago plam trees | 2/6/2010 |
| Q: how do I get rid of the scales ON THE FRAWNS. I've tried Flea & tick spray and malathion with no ... A: Robert: These insects are often on the undersurface of the fronds (leaves), but not always! Take a ... | |
| king sago | 2/3/2010 |
| Q: We have a two foot king sago house plant here in Maryland in our east facing window.Plant is watered ... A: Bruce: These plants like a well drained soil, so be sure you do not overwater. It is easy to do ... | |
| Lobloolly pine | 2/3/2010 |
| Q: I have two loblolly pines. water correctly, I sprayed for bugs. I am at a lose...Help my poor pine ... A: Marcia: Thanks for the photo. This tree looks like it is hungry for something or the roots are not ... | |
| Lobloolly pine | 2/3/2010 |
| Q: I have two loblolly pines. water correctly, I sprayed for bugs. I am at a lose...Help my poor pine ... A: Marcia: Can you describe specifically what you are concerned about or what is happening to them? ... | |
| can I use the Safer Insecticide on my once beautiful Rieger begonia which is getting some little white like sand on the leaves? | 1/28/2010 |
| Q: I have a 3 year old tree in a pot that I brought from Florida to Mass. it has a dozen nice lemons. ... A: Elizabeth: Good to hear from you again. Hope your are not mad at me for teasing you about moving. I ... | |
| sticky leaves on my meyer lemon... | 1/27/2010 |
| Q: I have a 3 year old tree in a pot that I brought from Florida to Mass. it has a dozen nice lemons. ... A: Why on earth did you move to Mass. from Florida? It is so much warmer there than where you are now. ... | |
| Pamelo Tree Disease | 1/27/2010 |
| Q: I gave a large pamelo tree about 10 years old and bears very large pamelo averaging 5 lbs.(pink ... A: Howard: Thanks for your question. From your description of the bare branches, there could be an ... | |
| Boston fern tips dying | 1/26/2010 |
| Q: My Boston fern is not doing well. The tips die and the process continues up the frond. This is ... A: Hazel: The symptoms you describe may be related to the stress of being transplanted, too much or not ... | |
| lemon tree | 1/25/2010 |
| Q: I live in Pennsylvania and have a 2 ft. tall lemon tree. It was doing well, but now the leaves are ... A: Bonnie: No special soil, just a good potting soil that doesn't have a lot of peat or spaghnum moss ... | |
| Claw-like leaf curl on crab apple | 1/24/2010 |
| Q: Upper leaves on an ornamental crab apple are curling in a claw-like manner from the top if the tree ... A: Noela: Can you send a closeup of a small twig with these leaves attached to it? Try to get as ... | |
| Bumps on trunk-Red Oak | 1/22/2010 |
| Q: I have this 4 yr old Red Oak that i planted last year. I just noticed that part of its trunk is ... A: When you get an opportunity, make a few deeper cuts into one of these bumps to see if it is solid or ... | |
| Bumps on trunk-Red Oak | 1/22/2010 |
| Q: I have this 4 yr old Red Oak that i planted last year. I just noticed that part of its trunk is ... A: Jim: I do not recall seeing this type of thing before. Using a razor blade, shave off the surface ... | |
| Weeping Willow | 1/21/2010 |
| Q: We live in southern Missouri. I planted a Weeping Willow tree about four years ago. It has thrived ... A: Hedi: There are a number of leaf and twig diseases that can affect the willows. Raking up and ... | |
| lemon tree | 1/21/2010 |
| Q: I live in Pennsylvania and have a 2 ft. tall lemon tree. It was doing well, but now the leaves are ... A: Bonnie: The leaf yellowing, browning and drop are good indicators of a root/soil related problem. ... | |
| Oak tree weeping black tar from bark | 1/20/2010 |
| Q: can you help me. I live in Melbourne Australia and my mature oak has just in the last 2 months ... A: Maree: I suspect that this seepage may be due to an injury or opening in the bark. The opening may ... | |
| Waxleaf ligustrum | 1/19/2010 |
| Q: I planted 10 waxleaf ligustrums about 5 years ago when we bought our house. They are out by the road ... A: Michelle: Be careful what you wish for- ha ha. My mother used the branches from a European privet ... | |
| Waxleaf ligustrum | 1/19/2010 |
| Q: I planted 10 waxleaf ligustrums about 5 years ago when we bought our house. They are out by the road ... A: Michelle: They should releaf if the bark isn't damaged too extensively, especially if the damaged ... | |
| Waxleaf ligustrum | 1/19/2010 |
| Q: I planted 10 waxleaf ligustrums about 5 years ago when we bought our house. They are out by the road ... A: Michelle: In my part of the world, these plants are very durable and can take a lot of abuse. ... | |
| Meyer lemon | 1/19/2010 |
| Q: I have a Meyer lemon about seven years old and recently ripe fruit has been dropping off. These ... A: Max: Thanks for your inquiry and greetings from almost the other side of the world! The "stab" ... | |
| my bonsai | 1/18/2010 |
| Q: My bonsai tree(coral bark maple) has lost all of its leaves and the tips of branches went black. ... A: John: Leaf drop and twig dieback are both symptoms of root and/or soil related stress. This may be ... | |
| Fungus (?) on Patio Clay Pots | 1/17/2010 |
| Q: I have rose bushes planted in terra cotta pots on my patio. All of the pots have the normal white ... A: Elizabeth: I doubt if this fungus is causing a problem to the rose. 9.0 times out of 9.5 times, it ... | |
| Ornamental Plum not losing leaves | 1/17/2010 |
| Q: I live in Southern California and I have an 2 ornamental plum trees that I planted last spring. ... A: Jessica: This phenomena may be related to the environment or a function of variety. If the tree ... | |
| my lemon tree | 1/15/2010 |
| Q: I have a lemon tree in my garden it is about 7 years old, it was transplanted into my garden from ... A: Alila: Thanks for your photo. From your photo, I would be suspicious of an insect much like an aphid ... | |
| tropical birch tree | 1/15/2010 |
| Q: I have a birch tree and while i was watering it, I noticed that there were four bright yellow rings ... A: India: This is a new one to me. I have never heard of this before. Can you send me a photo of that ... | |
| Miniature Orange Tree | 1/14/2010 |
| Q: I have a miniature orange tree that I have had for two years. Recently, some of the leaves began to ... A: Cale: If your tree is in a pot, check to see if the roots are getting cramped in the pot. This may ... | |
| apple tree leaf diseases | 1/13/2010 |
| Q: My 2 yo columner apple tree has leaf wilt on at least 3 branches at the ends of the limbs about 8-10 ... A: Patricia: If the branch tips (woody portion) themselves are also dying and turning brown, this may ... | |
| Bumps on trunk-Red Oak | 1/13/2010 |
| Q: I have this 4 yr old Red Oak that i planted last year. I just noticed that part of its trunk is ... A: Jim: Would you care to send a closeup photo of this area containing the bumps? Be sure to review ... | |
| Naval Oranges | 1/11/2010 |
| Q: Every year my naval oranges are not juicy on the inside, the are very hard. It that from a disease, ... A: Norma: I am not sure why your oranges are hard, but I do not think it is from a bona fide ... | |
| Gargenia | 1/10/2010 |
| Q: I have a Gardenia that is not doing well. I have had it about two years. In the summer it is kept on ... A: Andrew: The webbing may be from spider mites, very small 8 legged critters that are hard to see. ... | |
| Lichens on trees | 1/10/2010 |
| Q: There are filamentous lichens on the trees on our property in western North Carolina. Will they ... A: NC is one of my favorite states! Hope to move there one day. To your question. Lichens are not ... | |
| boston fern oily brown fronds | 1/6/2010 |
| Q: I have had an outdoor/indoor Boston fern for two years. It usually loses a lot of the bottom fronds ... A: Marge: Thanks for your question. If the fronds nearest the window lok wet and have a sour odor then ... | |
| Worm Larvae in Weeping Willow Tree | 1/6/2010 |
| Q: I live in the Central Valley of California, 4 years ago we planted a Weeping Willow tree in our ... A: Rita: Sending a photo may help to ID your "critter". I have a colleague here that works with bugs ... | |
| Disease on sago palm (Cycas) | 1/5/2010 |
| Q: Fronds start to yellow and curl about 2-4 weeks after new growth. I live in SA 50kg outside Cape ... A: Dave: These plants are usually quite adapted to high temperatures and prefer lower water levels in ... | |
| Pony tail Palm | 1/4/2010 |
| Q: I have a pony tail palm that is 8-10' tall. The buds of the palm have become seemingly rotten and ... A: Doug: I can't tell if this plant has scale (insect). These insects usually are located on the stems ... | |
| Grubs | 12/30/2009 |
| Q: I was wondering if you knew of any shrubs that are grub resistant. I have planted shrubs and ... A: Debbie: The white grubs that you find in the soil usually feed on turfgrass roots primarily. They ... | |
| Meyer lemon and Dwarf Naval Orange | 12/28/2009 |
| Q: We noticed spidery webs on both and sprayed with "Neem" an organic natural insecticide. It seemed ... A: Guy: These little pest may come from a variety of sources. They can merely fly to your tree from ... | |
| Silver oak bark disease | 12/28/2009 |
| Q: Respected Sir I have a 3 year old silver oak tree in my lawn. due to termite attack on some of its ... A: Simar: From your description, there may be some level of internal decay. Unfortunately, there is ... | |
| pecan problems | 12/28/2009 |
| Q: Our pecan trees have produced a good many nuts this year, but the kernel did not develop. The ... A: Margaret: Pecan can "cycle" through good and bad producing seasons- this is not uncommon. It may be ... | |
| Anthurium | 12/22/2009 |
| Q: I think I need answer from real expert.. What is wrong with my mother's Anthurium? I live in ... A: Andrej: After visiting with a horticulture specialist colleague of mine and searching a few ... | |
| Anthurium | 12/22/2009 |
| Q: I think I need answer from real expert.. What is wrong with my mother's Anthurium? I live in ... A: Andrej: Thank you for your question. I do not recognize these flower symptoms associated with a true ... | |
| Mimosa Tree | 12/21/2009 |
| Q: Our mimosa tree has bumps of raised bark. There was a worm in one place that looks like pictures of ... A: Sally: Boring insects usually have an obvious entrance or exit hole that is visible. The prenence ... | |
| Tree oozing sap | 12/20/2009 |
| Q: Since Gill (shrubs) and Jim (trees) are on vacation and I need some advice now, I wondered whether ... A: Patty: If this plant is well established in your landscape, there shouldn't be a problem. Best to ... | |
| Anthurium leaves turning brown | 12/20/2009 |
| Q: Vann, I own 2 Anthurium plants which I purchased in Oct 09 from Home Depot. I replanted them in new ... A: Eva: The "blotches" resemble a potential injury rather than a bona fide disease. These areas may be ... | |
| Trying to Cure my Miniture weeping Cherry | 12/13/2009 |
| Q: I have been having troubles with my miniature weeping cherry that i planted approximately 8 months ... A: Scale insects can be a pest to many plants. There are a lot of different scale insects. Use your ... | |
| Flowering Plum Tree | 12/11/2009 |
| Q: Our flowering plum tree is 5 yr old. The trunk recently large split of the entire length of the ... A: Debbie: Often times this can lead to the ultimate demise, depending on the severity. Can you send ... | |
| Coral bark japanesse maple... | 12/10/2009 |
| Q: I am here to describe my dire problem, ok, here goes: Some 30 days ago, I re-potted my maple and I ... A: Jovan: I suspect that the worms may be incidental. If the darkened tips are throughout most of the ... | |
| jasmine plant | 12/8/2009 |
| Q: I am in Florida from Dec. to May and have a jasmine plant on my lanai. The person responsible for ... A: Renee: The leaf curl and blackening may be a result from the previous drought conditions. They may ... | |
| Holly Bush Berries | 12/6/2009 |
| Q: This is the 2nd year we've had this plant. The first year it got loads of berries. This year the ... A: Tom: If the plant looks good otherwise, I suspect there may have been a weather or some other ... | |
| Olive Tree Disease | 12/5/2009 |
| Q: The tops of some branches of my fruitless olive tree have leaves that are dying. I also have two ... A: Toni: Could you send along a photo of a branch with the affected leaves attached to it? Be sure to ... | |
| saga palm problem | 12/4/2009 |
| Q: I have had a sago palm in my front yard for about 10 years. Never had a problem until now. The ... A: Sounds like you are from warmer climates than Arkansas right now- it is about 35 here now. From ... | |
| Tomatoes | 12/3/2009 |
| Q: I know you are not supposed to repeatably grow tomatoes in the same spot for disease reasons. In my ... A: Brian: The yellowing may be caused by things other than infectious diseases. It would be best to ... | |
| growth on tree | 12/1/2009 |
| Q: I noticed this tree while hiking through a woods of hickory, maple, oak and beech. The tree had a ... A: Sheri: Phomopsis (fungus disease)can be a cause, among others that can cause these "galls" on the ... | |
| greenpeppers | 12/1/2009 |
| Q: it's the beginning of the harvest season, i only harvest once but now my greenpepper plant are ... A: Liezl: Wilting of the plant can be caused by root/stem problems, especially if the soil has been ... | |
| green giant arborvitae diseases | 11/30/2009 |
| Q: Also worth mentioning - we live in central NJ and so far have had a couple days of 34 degree ... A: Aret: Root related problems usually cause the tips to brown, especially if this is distributed over ... | |
| Oak Tree Disease in Central NJ | 11/30/2009 |
| Q: I have recently noticed that my 3 year old PIN Oak tree has a Some type of disease on its trunk. The ... A: Frank: Thanks for photo. This young tree looks like it was damaged by some physical means, like an ... | |
| green giant arborvitae diseases | 11/29/2009 |
| Q: we recently - 10-05-09 planted 30 Green Giants. we were advised to water it about 2-3 inches of ... A: Aret: I would hold off on the water to once per week for one month, then cut back on an as needed ... | |
| pine tree disease | 11/26/2009 |
| Q: I have a pine tree that is 14 ft. tall. It is around 7years old. The new growth as well as the ... A: Deanna: In many areas of the U.S. pine trees are shedding many of their inner needles. Examine your ... | |
| pecan | 11/26/2009 |
| Q: The pecans that are falling off my tree this year have mold inside or they are just shriveled. Is ... A: Vivian: I suspect that these pecans are being shed for some other reason rather than the mold.. If ... | |
| Hollow Core In Giant South Florida Pecan Tree | 11/26/2009 |
| Q: In our courtyard, a 100+ years old pecan tree and about 100’ high was recently trimmed. At about ... A: Robert: The tree may have a slow, yet progressive disease that causes a wood rot. A tree, if ... | |
| Yucca Disease | 11/25/2009 |
| Q: We have a Yucca tree that is about 5 years old and has spotted brown patches on some of the ... A: Cj: I do not suspect that the spiders are involved. It is best to get an accurate diagnosis from ... | |
| pomegranate | 11/24/2009 |
| Q: why they open in the tree and what can i do to resolve it? Thank you! ANSWER: Karina: Good Morning! ... A: I wish that I had one of these trees where I live- you are very lucky indeed. All I have here are ... | |
| Yucca Disease | 11/24/2009 |
| Q: We have a Yucca tree that is about 5 years old and has spotted brown patches on some of the ... A: Cj: This spot MAY be caused by a fungus called Cercospora. Use your computer to "Google" Yucca leaf ... | |
| lemons | 11/23/2009 |
| Q: I have a beautiful lemon tree (don't know if it's the valley or meyers, but it has a thicker skin, ... A: Melissa: There could be several diseases that may cause the spots on the lemons. If you live in ... | |
| indoor pine tree | 11/23/2009 |
| Q: A few years back I had a problem with a indoor potted pine tree that I ask about. It has a white ... A: I suspect that the stick stuff may be "honeydew", which is an insect excretement. Not sure about ... | |
| little bugs | 11/22/2009 |
| Q: I moved to Wy last Feb. and my houseplants have these little tiny bugs that fly too living in my ... A: If the flying insects are very small and resemble "gnats" these may fungus gnat adults. The ... | |
| Whitish coating on Holly Bush leaves | 11/21/2009 |
| Q: I live in NC and my Holly bushes have a powdery white looking coating on the leaves. What shoul I ... A: Rachel: This may be powdery mildew, a very common and mostly cosmetic disease on many ornamental ... | |
| Arborviate | 11/20/2009 |
| Q: There seem to be small white fuzzy eggs on an arborvitae in my yard. This tree also seems ... A: Jean: I suspect that the interior browning is normal and is related to the time of the year. Just ... | |
| peas | 11/15/2009 |
| Q: I have a small hydroponic garden using auto-pot technology.My snow peas were producing really well ... A: Wayne: The leaves look a bit hungry, however this symptom can be caused by several things- usually ... | |
| sick Yucca plant | 11/14/2009 |
| Q: This is a follow up to my previous questions about my Yucca. I'm in the middle of looking at the ... A: Alissa: Good Morning! It's Sunday morning here. House calls? WOW. I wish, however I am in Arkansas. ... | |
| sick Yucca plant | 11/13/2009 |
| Q: I've had a Yucca plant for years, but about 3 years ago it started to get sick. It had a bad case of ... A: Alissa: Thanks for your patience. I do not think that the "film" is a disease, but probably young ... | |
| sick Yucca plant | 11/13/2009 |
| Q: I've had a Yucca plant for years, but about 3 years ago it started to get sick. It had a bad case of ... A: Alissa: Is the "film" cover the entire leaf or is it in splotches or patches? I cannot see the ... | |
| sick Yucca plant | 11/13/2009 |
| Q: I've had a Yucca plant for years, but about 3 years ago it started to get sick. It had a bad case of ... A: Alissa: Can you send a closeup photo of the film? If so, review photo on your computer first to be ... | |
| Japanese Maple infested by borer | 11/12/2009 |
| Q: I have discovered my maple tree arrox 30 yrs old has a disease on the bark which has killed one limb ... A: Ruth: Once in the tree, borers are difficult if not impossible to kill inside the tree. If you ... | |
| lemon infestation | 11/12/2009 |
| Q: Dr Vann, my lemon tree has an infestation of black, semi circular growths all along the branches. ... A: Madeleine: I do not recognize any sort of plant disease from your photo, however these structures ... | |
| Apple tree | 11/12/2009 |
| Q: I moved in this new place and there's an apple tree in the yard. The apples are quite small and ... A: Filip: I do not recognize a disease from your image, however there appears to be some possible ... | |
| white spots on maple leaves & holes on trunk of tulip tree | 11/11/2009 |
| Q: What are the white spots on maple leaves? Can this be spread to other trees? There are small round ... A: Jane: The holes in the tree are from a sapsucker (type of woodpecker)-maybe a yellow bellied ... | |
| Palm Tree | 11/10/2009 |
| Q: Do you know what is causing this on this filifera. Can anything be done for it? Thank you very much ... A: John: Thanks for the followup information. I am not familiar with the effects of cold temperatures ... | |
| Weeping Willow | 11/8/2009 |
| Q: I have a weeping willow in my back yard. It was here when I bought my home in 1998. It has always ... A: Patti: Look for any evidences of bark damage or loosening, especially near the base and up on the ... | |
| Palm Tree | 11/8/2009 |
| Q: Do you know what is causing this on this filifera. Can anything be done for it? Thank you very much ... A: John: I was unable to locate the images that you mentioned. Can you send the specific link and I ... | |
| white rice looking things on all leaves of gardenia plant | 11/4/2009 |
| Q: I brought the plant for the winter and it has developed in a short period of time this white rice ... A: It's getting about that time of the year to bring the plants in off the deck or porch. We have ... | |
| junipers & boxwoods | 11/3/2009 |
| Q: I will try to explain as best as possible; firstly we recently moved into a new home that already ... A: Eileen: Good Morning! A bit too cold for me where you are. Tonight here- 40's w/clear skies. Highs ... | |
| emerald arbovitaes disease? | 11/2/2009 |
| Q: Dr. Van We have 19 emeralds I am very concerned about.Much like Trish we have a golden/orange ... A: Jim: Just keep an eye on them. Browning/bronzing foliage on the inside is a normal event this time ... | |
| boxwood problems | 11/1/2009 |
| Q: I planted three boxwoods about 2 months ago. Purchased from a very reputable nursery. The leaves on ... A: Ellen: From your description, this doesn't sound like a normal thing. This discoloration may be ... | |
| junipers & boxwoods | 10/31/2009 |
| Q: I will try to explain as best as possible; firstly we recently moved into a new home that already ... A: Eileen: I'd suggest not replacing the junipers until you can determine their health status- maybe ... | |
| junipers & boxwoods | 10/30/2009 |
| Q: I will try to explain as best as possible; firstly we recently moved into a new home that already ... A: Eileen: Junipers prefer well drained soils. Excessive soil moisture can lead to comlicated root ... | |
| emerald arbovitaes disease? | 10/29/2009 |
| Q: Dr. Van We have 19 emeralds I am very concerned about.Much like Trish we have a golden/orange ... A: Jim: I suspect that the change in color, especially if it is occuring on many of these plants is ... | |
| Winterberry | 10/28/2009 |
| Q: Steve here are some pictures of that winterberry with those black spots. thanks again Mike A: Mike: Thanks for the photo. This photo may suggest some type of fungus disease. There are a few ... | |
| Fox Tail Palm Diease? | 10/28/2009 |
| Q: We have some foxtail palms that we planted 3 years ago. This year, we noticed that several of the ... A: Lois: I don't think this is an infectious/contagious situation. It may be related to a potential ... | |
| New Bradford Pear tree dying? | 10/26/2009 |
| Q: I recently purchased 2 Bradford Pear Tree's. They are still in their plastic 20 gal. containers. ... A: Mary: Leaf browning may be due to root related stress. This can be, among other things lack of or ... | |
| Ivy | 10/26/2009 |
| Q: Over the past few months the ivy outside my walk way has lost it's leaves and the vines are exposed. ... A: Judy: In most cases, the "root rots" are associated with the soil remaining wet or saturated for ... | |
| Oak tree damage | 10/26/2009 |
| Q: I live in the panhandle of FL and have a young pin oak whose leaves are looking awful. They have ... A: Annette: Congratulations! It came through in flying colors. This is a very common fungus disease ... | |
| Fruitless Mullberry | 10/26/2009 |
| Q: We have a fruitless mullberry tree that is 65 to 70 years old. It is beginning decay. Do you have ... A: Kathy: Unfortunately, there is not a magic bullet. The decay is often a slow, yet progressive ... | |
| pin oak tree | 10/25/2009 |
| Q: We have a mature pin oak tree in our front year. This year, the bark has started to fall off, the ... A: Jeff: From your description, I would suspect that your tree may have some level of decay inside. If ... | |
| Honey Locust Tree | 10/25/2009 |
| Q: For the first time ever, 20+ years, our two side-by-side honey locust trees have no seed pods. ... A: Michelle: If the tree seems and looks healthy otherwise, I'd sit tight and relax. Weather conditions ... | |
| Blue Plum Tree | 10/25/2009 |
| Q: This Blue Plum tree is approx 15-20 years old. Blossoms and sets fruit then fruit seems to shrivel ... A: Phyllis: If the fruit seems to rot on the tree before it shrivels, this may be a disease called ... | |
| yellowwood tree | 10/25/2009 |
| Q: We have a yellow wood tree we planted about 5 years ago, I believe it was about 10-15 years at that ... A: Angela: This may be some sort of insect. Can you take and send a closeup photo of this white stuff? ... | |
| Magnolia Tree Leaves Wilting | 10/24/2009 |
| Q: We transplanted a 10 foot magnolia tree in March of this year. The leaves yellowed and spotted at ... A: Cath: Some occasional leaf drop isn't of too much concern, especially inner leaves. If you have ... | |
| Oak tree damage | 10/24/2009 |
| Q: I live in the panhandle of FL and have a young pin oak whose leaves are looking awful. They have ... A: Annette: Can you send along a closeup photo of one or two leaves with the raised areas/spots? I have ... | |
| Jacaranda tree weeping | 10/24/2009 |
| Q: I have two young jacaranda trees which were taken indoors before the frosts started. I forgot to ... A: Bob: The tree may have been stressed by (1) heated air currents and (2) light changes. Leaf drop can ... | |
| Ivy | 10/22/2009 |
| Q: Over the past few months the ivy outside my walk way has lost it's leaves and the vines are exposed. ... A: Judy: What type of ivy do you have? Did the leaves have any spots before dropping? Was anything ... | |
| Algae Growth | 10/20/2009 |
| Q: I am doing a science project for school and was wondering if you could help me. If you can, please ... A: Charlie: Very good questions, unfortunately my background is primarily plant diseases and I don't ... | |
| Lilac Tree | 10/20/2009 |
| Q: My tree is losing it's leaves at a fast pace. The leaves have spots and look dead on the tree. ... A: Leaf drop can be a common response to stress, especially when it originates in the roots. Your tree ... | |
| Lilac Tree | 10/20/2009 |
| Q: My tree is losing it's leaves at a fast pace. The leaves have spots and look dead on the tree. ... A: Judy: Can you take and send a closeup photo of a leaf or two with the spots? Review photo on your ... | |
| lemon tree from seed | 10/19/2009 |
| Q: I have grown a lemon tree from a seed. It is now about 5 years old and over 2 feet. Over the last ... A: I don't recognize anything in particular that is associated with the spots. If they begin to spread, ... | |
| lemon tree from seed | 10/19/2009 |
| Q: I have grown a lemon tree from a seed. It is now about 5 years old and over 2 feet. Over the last ... A: Charlotte: Glad to hear you've been successful at getting a lemon tree from seed- wow , you must be ... | |
| Black Jack Fig | 10/18/2009 |
| Q: Vann, We planted a 5 Gallon Black Jack Fig in Palos Verdes, Ca on June 15, 2008. I put 2 0-10 ... A: Bob: I believe this tree is a deciduous tree and will drop its leaves for the season. They usually ... | |
| Hibiscus | 10/18/2009 |
| Q: I live on Long Island, and just tried replanting my Hibiscus to bring in for the winter, one was ... A: Chrissy: If the gnats are very small and black, they may be fungus gnats. If so, these things are a ... | |
| miniature rose | 10/18/2009 |
| Q: The leaves are wilting and there is a white pasty substance coating many leaves and even stems. What ... A: Joan: This waxy stuff doesn't sound like a disease, but possible insect. Can you send a closeup ... | |
| tiny orange worms | 10/17/2009 |
| Q: I was looking at acorns one day and I found two little orange worms eating the acorn.I would like to ... A: Tiara: These insects are probably considered parasites, but I suspect they will have minimal overall ... | |
| emerald arbs | 10/17/2009 |
| Q: we planted 20 4' emerald arborvitae trees in August. They seemed to have done fine. Until about 1 ... A: Trish: I do not suspect an infectious disease, rather an environmental stress- perhaps the period of ... | |
| key lime tree | 10/17/2009 |
| Q: my key lime has white film on the leaves,thank you Cheryl A: Cheryl: Check to see if this film will wipe off by using a wet paper towel and rubbing the leaf. If ... | |
| emerald arbs | 10/16/2009 |
| Q: we planted 20 4' emerald arborvitae trees in August. They seemed to have done fine. Until about 1 ... A: Trish: Thanks for your inquiry. Are all of these plants becoming discolored? What state do you ... | |
| Worms on lemon tree | 10/14/2009 |
| Q: I have noticed some very ugly ugly looking worms on my leaves on my lemon trees that I have planted ... A: Sandra: These are the orangedog caterpillar. It is the immature form of a swallowtail butterfly. On ... | |
| moss on trees | 10/13/2009 |
| Q: there is a lot of moss on the tree stump and branches.kindly let me know what i should apply to kill ... A: Vcsrajan: Moss occurs frequently in environments that are consistently moist or wet. Consider ... | |
| Eugenia problems | 10/13/2009 |
| Q: I have a row of 10 Syzygium paniculatum (Eugenia) hedges that I planted about 6 months ago. They ... A: Mark; Based on your description, I'd probably be leaning toward an environmental issue. There may ... | |
| White powdery substance on branches | 10/13/2009 |
| Q: Have a tree in the yard but not sure what it is (not a typical oak, maple...poss. a fruitless, ... A: Michael: One option for you to think about is snipping off one of these twigs with the white stuff ... | |
| bugs in my tree | 10/12/2009 |
| Q: I have this white web on some of my trees. There are black pepper like things inside the web. The ... A: Victoria: This looks like an insect pest called fall webworm. Check out fall webworm under "Google ... | |
| redbud tree | 10/12/2009 |
| Q: The bark of my ten year old redbud seems to be shedding right at the base of the tree. I don't like ... A: Paul: This may indicate possible insect or disease activity. You might consider scratching around ... | |
| Dark colored bugs on our white birch tree | 10/12/2009 |
| Q: Over the last few years we have had bugs on the limbs of our tree. They are clustered together on ... A: Rick: Can you send a photo of these critters? Take a closeup photo of a few of these. Be sure to ... | |
| risk of tree falling | 10/11/2009 |
| Q: In July a 100 foot linden tree fell on my house. Now I look at my other trees differently. I have a ... A: Howard: I would suggest getting an assessment by a certified arborist. These folks are trained to ... | |
| Pear tree leaf problems | 10/11/2009 |
| Q: I have inherited two wall splayed pear trees each of a different variety but both of whom suffer ... A: Beverly: You are very welcome- glad I could help!! I am in Arkansas. Many of the these rust ... | |
| Arbovitae | 10/11/2009 |
| Q: I did not notice it earlier because they look nice and green on the surface. I also have another in ... A: Julia: Some browning is expected from the inside, especially if it is of mature size. If you can, ... | |
| Spotty Sage Cutting | 10/11/2009 |
| Q: I've recently obtained a sage cutting that was a bit wilty when I got it, but I attributed to stress ... A: Kasey: The browning and wilt can be due indeed to a root related stress. Just give it some TLC and ... | |
| fruitless mulberry tree | 10/9/2009 |
| Q: What is the average life span of a fruitless mulberry tree that has been pollarded yearly? A: Susann: Difficult to say. Depends on overall health and cultural care and if any decay is within ... | |
| Peach Tree | 10/9/2009 |
| Q: There are strange balls that look like sap at the base of my peach tree. Why? A: Sarah: This exudate is "sap" from the tree that is expressed through an opening in the bark. It ... | |
| dying bogenvillas | 10/8/2009 |
| Q: We live in Cabo San Lucas, Mexico where bogenvillas are abundant. Four years ago we planted four ... A: Lin: Check a couple of things first. Take a close look at the main stem near the soil line and ... | |
| Mini rose bush disease and it's effect on people.. | 10/8/2009 |
| Q: I wanted to ask about the powdery mildew fungus that I found on my mini red rose bush. I brought it ... A: Sharon: I am not aware of any documented allergies or other ill effects that PM has on people. ... | |
| fat albert spruces | 10/8/2009 |
| Q: We had an incredibly damp summer for Kansas and my beautiful spruces' needles are turning yellow ... A: Lori: I am assuming the tree has been planted for some time. I did not recognize any infectious ... | |
| Pine Tree Fungus | 10/8/2009 |
| Q: I have an alpine fir that is about 5 years old. This fall it has developed a bizarre white speckled ... A: Nicole: This may be an insect rather than a fungus. Using your computer, go to "Google Images" and ... | |
| Flowers on Magnolia Trees | 10/7/2009 |
| Q: I planted a small magnolia tree. It is growing fine and has begun to have flowers. The flowers when ... A: W.R. Thanks for your question. From your description, it sounds as if the outer parts of the ... | |
| Weeping Mulberry | 10/7/2009 |
| Q: I am a novice gardener (your average new home owner). We built a new house last July and I planted ... A: Ash: Your question may be better suited for an insect person. You may wish to consider collecting ... | |
| sick fruitless mulberry | 10/7/2009 |
| Q: We have several fruitless mulberries in our yard in East Contra Costa County, CA. We lost one a few ... A: Denise: Thanks for the information. From your description, there may be some low level of internal ... | |
| Palm tree pest spreads! | 10/6/2009 |
| Q: I have a somewhat bizarre situation. I live in Toronto (Canada) and got an indoor palm tree a few ... A: Emma: I am not aware of these things causing an allergy- just a nusiance when they are unsightly. ... | |
| Palm tree pest spreads! | 10/6/2009 |
| Q: I have a somewhat bizarre situation. I live in Toronto (Canada) and got an indoor palm tree a few ... A: Emma: Did these objects move AFTER they were seen stuck to the wall? If not, these things may be ... | |
| oak trees | 10/6/2009 |
| Q: I have these brown fuzzy things all over my oaks. And also some kind of worm eating all the leaves. ... A: Rhonda: It would be necessary to know the insect identity first. Can you send a photo of the insect ... | |
| magnolia diseases | 10/5/2009 |
| Q: my magnolia's are 45 yrs. old. one tree is in good condition but the other one has dead limbs all ... A: Dudley: This papery growth may be Lichens. Have a look at this article I wrote and let me know if ... | |
| Oleander Health and Transplanting | 10/5/2009 |
| Q: Vann: I live in Southern California where, for many years, as other residents do, I've lined the ... A: David: Your theory does indeed has some merit. It is difficult to say how much, because these ... | |
| Asparagus | 10/4/2009 |
| Q: My plants have a white sticky substance on some of the ferns. This is the first year we got any ... A: Elsie: Can you send a closeup photo of this stuff on the leaves? It may help me to see it. It may ... | |
| sick fruitless mulberry | 10/4/2009 |
| Q: We have several fruitless mulberries in our yard in East Contra Costa County, CA. We lost one a few ... A: Denise: You might give the trunk a look. Check for areas where the bark may have been damaged or ... | |
| orange tree problems | 10/4/2009 |
| Q: My new orange tree (2 years) has black specks covering the under side of most of the leave. What is ... A: Gene: Can you take a closeup photo of a leaf or two and send for me to see? Review your image on ... | |
| Grapefruit tree | 10/3/2009 |
| Q: I have a 5 year old grapefruit and it is now shooting out new growth. The leaves get a white almost ... A: Mark: This white covering may be a fungus disease called powdery mildew. Using Google Images on ... | |
| Red Tips in Trouble | 10/2/2009 |
| Q: Please see the attached photo. Several of our red tip shrubs have this at the base of the plant and ... A: Tommy: This white stuff is a fungus that is fruiting on the base of the shrub. There is a good ... | |
| Brown arborvitaes | 10/2/2009 |
| Q: this is my follow up question on the arborvitaes (the old converse 'Dying Garden" doesn't except ... A: Olga: If the browning in your photo is quite representative of the overall condition of the trees, I ... | |
| pine trees | 10/2/2009 |
| Q: I planted several pine trees last year. This summer in the Alabama gulf shores area we had a very ... A: Mike: Take a look at this brief article that may help answer "sooty mold" questions. You will need ... | |
| pine trees | 10/2/2009 |
| Q: I planted several pine trees last year. This summer in the Alabama gulf shores area we had a very ... A: Mike: Check to see if the black coloring on the needles will rub off with a wet finger or a wet ... | |
| deseases in orange plants | 10/1/2009 |
| Q: sir, we have orange garden. these days some oranges in orange crop r turning orange in colour ... A: Vishal: You may have an insect infestation based on your description. Correct ID is necessary to ... | |
| oak trees | 10/1/2009 |
| Q: I have these brown fuzzy things all over my oaks. And also some kind of worm eating all the leaves. ... A: Rhonda: If these fuzzy brown things look like fuzzy balls often stuck to the leaves, then these are ... | |
| house plants | 10/1/2009 |
| Q: Ive been finding little balls on the floor under a few house plants, which i picked them up and ... A: Joe: Thanks for your question. What houseplants are you finding these objects under? And can you ... | |
| Pine tree disease | 10/1/2009 |
| Q: Good day. I am in the Northeastern US and noted that several of my pine trees have round spotty ... A: Good Morning. Based on your description, suggest taking a look at "Lichens" using Google Images on ... | |
| Ligustrum disease | 10/1/2009 |
| Q: Dr. Vann, I have a Ligustrum tree that appears to have some type of disorder. It looks like spider ... A: Bill: Have a look at "Tent Caterpillars" and also "Fall Webworm" using Google Images on your ... | |
| Willow weavils | 9/30/2009 |
| Q: I saw your answer about the black bugs that eat willow tree leaves as the situation you described is ... A: Laura: It is best to the insect ID'd correctly. This will be useful to select the most appropriate ... | |
| arborvitae`s | 9/30/2009 |
| Q: Pictures are attached pleas e help @@@@@IMAGE:35432:Plant-Diseases-715/2009/09/tree_3.jpg##### ... A: Paul: I contacted the Extension service in your state just a few minutes ago and was told that there ... | |
| A Disease is Killing My Trees in Southern California | 9/30/2009 |
| Q: Vann: I live in Southern California in the "Inland Empire" about 70 miles east of Los Angeles, and ... A: David: I expect the black substance can be any number of fungal organisms that have become ... | |
| Crape Myrtle | 9/30/2009 |
| Q: I have about 20 crape myrtle and 2 of them planted two years ago have white scales on their trunks ... A: Mark: This black stuff may be sooty mold, the result of an insect infestation. It can discolor the ... | |
| arborvitae`s | 9/29/2009 |
| Q: Pictures are attached pleas e help @@@@@IMAGE:35432:Plant-Diseases-715/2009/09/tree_3.jpg##### ... A: Paul: I would probably hold off on any fertilizer right now since fall and winter are just around ... | |
| Aspen trees with aphid problem in the Fall | 9/29/2009 |
| Q: We have had an aphid problem with our aspen trees. Do you think we should get 3 treatments ... A: Nicole: At this time of year, I think you would be wasting your time and money. Here in my part of ... | |
| Black Spots on Trees | 9/29/2009 |
| Q: I live in an area that has a spring running through the whole development. My side yard gets very ... A: Good Morning! I took a look at your photo, but unfortunately, it is not in focus. Can you resend? ... | |
| arborvitae`s | 9/29/2009 |
| Q: Pictures are attached pleas e help A: Paul: Thanks for the photo. I would suspect that the yellowing is probably related to a root or soil ... | |
| Crape Myrtle - leaves turned black | 9/28/2009 |
| Q: Recently our otherwise healty crepe myrtle seems to have turned black with some type of ... A: Don: See this publication about Sooty ... | |
| white gummy stuff under basil leaves | 9/27/2009 |
| Q: We noticed a white gummy, almost looks like spit, on the underside of a basil plant. Couldn't see ... A: Sam: If this stuff looks like spit, it may be an insect called Spittle Bug. Check out Google Images ... | |
| white measels on Sago palm | 9/27/2009 |
| Q: One of my Sago palms has developed what I can best describe as white measles on the fronds. The ... A: Can you take and send a closeup photo of these white things? These may be a type of insect (possible ... | |
| emerald green arborvitae | 9/25/2009 |
| Q: I live in central Illinois and in spring 2008 planted 20 emerald green arborvitae. They budded like ... A: Rick: Thanks for the photos. These structures are normal -- the Male and female reproductive ... | |
| pecan trees | 9/24/2009 |
| Q: my husband dies 8 months ago and he was the tree and landscaping person, i have no idea what to do ... A: Becki: I suspect that the black spots on the leaves may be a disease called Pecan Scab- a very ... | |
| pomegranate tree | 9/24/2009 |
| Q: old and it beared a few fruit that was not edible.Now with fruit still on the tree. half of the tree ... A: Joyce: First, I'd look around at the tree for any evidence of injury/damage to the trunk, especially ... | |
| Eugenia shrubs | 9/23/2009 |
| Q: I have about 20 Eugenia shrubs that were planted back in mid-June of this year. None showed any ... A: Laura: I do not suspect a bona fide infectious disease here because of the pattern. I would lean ... | |
| king palm trunk is dying | 9/22/2009 |
| Q: Two years ago I planted a large 36 inch boxed triple trunk King palm in my yard in coastal southern ... A: Chris: This might be a root rot that has slowly developed or possibly insects that may have moved ... | |
| Stinkhorn Fungi(carrot like fungis around my maple tree) | 9/22/2009 |
| Q: I have discovered this fungus in a few places around my yard, especially around my maple tree and in ... A: Ashley: This stinkhorn fungi (several types)are not harmful to plants. It may seem to "pop" up ... | |
| emerald green arborvitae | 9/21/2009 |
| Q: I live in central Illinois and in spring 2008 planted 20 emerald green arborvitae. They budded like ... A: Rick: Please send a closeup of these structures as they appear attached on the twigs. Review your ... | |
| Privet dying | 9/21/2009 |
| Q: Our privet hedges have a whitish-greem mold of fungus growing on the stems. Some leaves have a ... A: Joanne: Beyond appropriate fertilization (based on a recent soil test) and watering -especially ... | |
| Euonymous Scale | 9/20/2009 |
| Q: I got nervous when I read that Scale should be treated in May and June, its now October and I've had ... A: Sherrie: In my part of the world, this euonymous scale insect is the worst insect pest on this ... | |
| japanese beetles | 9/19/2009 |
| Q: Northern Indiana I plan to use milky spore in order to control the Japanese beetles in my lawn. ... A: Sam: Based on your information, probably best in Mid to late July. Since the climate will affect ... | |
| Privet dying | 9/19/2009 |
| Q: Our privet hedges have a whitish-greem mold of fungus growing on the stems. Some leaves have a ... A: Joanne: The gray-green leafy circular patches on the stems are lichens. Google images of the things ... | |
| Privet dying | 9/19/2009 |
| Q: Our privet hedges have a whitish-greem mold of fungus growing on the stems. Some leaves have a ... A: Joanne: The mold that you mentioned may be a couple of things. Can you submit a closeup photo? The ... | |
| What is causing very fine saw dust and sticky drops under Mimosa tree | 9/17/2009 |
| Q: I have a Mimosa tree over my driveway. Every day there is a fine sawdust like substance on my car ... A: Joseph: I would be very suspicious of an insect associated with the sawdust material and sticky ... | |
| Live oak tree | 9/17/2009 |
| Q: I have noticed a spider web like cocoon engulfing my tree. I live in the southern part of Texas. I ... A: Alice: Can you describe the size and location of the web on the tree? If possible, can you send a ... | |
| meyer lemon losing leaves | 9/16/2009 |
| Q: My lemon tree is 3 years old, and it summers outdoors and I bring it in mid September. This year ... A: Laina: Mites can debilitate a plant if the numbers are large enough- causing the leaves to yellow. ... | |
| dying roses | 9/16/2009 |
| Q: We have a Bit of a dilemma, my girlfriend is in a bit of a quandary as to why her precious Rose ... A: Jenny: Thanks for your inquiry. I agree that the shears/pruning are probably not the cause, unless ... | |
| tomato blight | 9/16/2009 |
| Q: Is there any way to get blight out of the soil after it has been introduced? Our garden is organic, ... A: Lynda: Many plant problems can lead to a wilt- it is one of the most common symptoms of bonafde ... | |
| meyer lemon losing leaves | 9/15/2009 |
| Q: My lemon tree is 3 years old, and it summers outdoors and I bring it in mid September. This year ... A: Laina: The yellowing leaves w/greer veins sounds very suspicious of a soil related problem. This ... | |
| fungus?? | 9/15/2009 |
| Q: I live in southeast NC. I & my neighbors have some kind of reddish/purple powder like substance on ... A: James: See this bulletin I have prepared on Sooty Mold. You will need to have a free program on ... | |
| pine tree dying | 9/15/2009 |
| Q: I have 3 pine trees in my back yard that are dying. The needles are turning brown and falling off ... A: Mike: Check the trunks and root zone area for evidence of physical damage (e.g. bark damage or ... | |
| tomato blight | 9/15/2009 |
| Q: Is there any way to get blight out of the soil after it has been introduced? Our garden is organic, ... A: Lynda: The most common blights that we might see here in Arkansas are Early Blight or Late Blight. ... | |
| fungus?? | 9/14/2009 |
| Q: I live in southeast NC. I & my neighbors have some kind of reddish/purple powder like substance on ... A: James: Since this is occurring on several unrelated plants, I would be inclined to think it was not ... | |
| Lilac Disease | 9/14/2009 |
| Q: I was having curling brown leaves on half my lilac bush but was able to get flowers on the other ... A: Joy: Sounds like the lilac may be in a terminal condition from your description and removal may be ... | |
| indoor ficus | 9/13/2009 |
| Q: My ficus has a white ball on the under part of the leaf where the leaf comes out from the branch. ... A: Shelia: This may be an insect such as a wooly aphid or mealybugs. Google "images" of these two ... | |
| Lilac Disease | 9/13/2009 |
| Q: I was having curling brown leaves on half my lilac bush but was able to get flowers on the other ... A: Joy: If this fungus is growing directly on the bark, then it may represent some level of decay that ... | |
| jade houseplant | 9/13/2009 |
| Q: I've cut off many branches but can't seem to control it. Should I give it all new soil? A: Julie: Can you take a closeup (get as close as you can)photo of this gray stuff on the stem/leaf and ... | |
| sago palm white scales treatment | 9/11/2009 |
| Q: i was told to use Volck oil spray and malathion to kill the white scales disease on my sago palm is ... A: Theresa: Both of these products can be used for the scale insects. Test them on a small portion ... | |
| Emeral Arborvitae | 9/11/2009 |
| Q: I bought three arborvitae that are approximately 4 ft. high. One has been transplanted into another ... A: Betty: On the fern, again I suspect a soil issue. The Miracle Gro products are usually quite good ... | |
| mulberry tree disease | 9/10/2009 |
| Q: My large mulberry tree has a whitish mold growing on several branches. This year I noticed that ... A: Nick: If the tree is "mature", and the mold seems associated with the bare branches, I suspect it is ... | |
| dieffenbachia leaf fall | 9/10/2009 |
| Q: i had this dieffenbacia since april and it was all bushy and brilleint with color, and now i dont ... A: Mohammad: These symptoms often result from a root related stress. For example, if the soil is too ... | |
| Pomegranate with twisted leaves | 9/10/2009 |
| Q: You guys always have the answers, so here's my problem: I recently purchased a dwarf pomegranate ... A: Maegan: That is one "weird" looking plant- but it sounds cool though. Since you volunteered (be ... | |
| Maple Tree | 9/9/2009 |
| Q: We are sorry, but kathy crowley wasn't able to answer yourWe have an older maple tree. I don't know ... A: Leslie: This can indeed happen, especially if the roots are extensive enough to have entered the ... | |
| Blue Girl Holly | 9/9/2009 |
| Q: Any idea what would make my previously healthy (planted this summer, 24 inches high) suddenly drop ... A: Pam: Leaf drop can be a result of a root and/or soil related stress. Things to consider: Be sure it ... | |
| italian cypress | 9/8/2009 |
| Q: I have 32 yr old Ital cypress and 2 seem to have large dead patches in the upper 1/3 of tree. I ... A: Madeline: The dead patches could be several possibilities such as a twig blight plant disease or ... | |
| tree care | 9/8/2009 |
| Q: I have a combination of dwarf alberta spruce, cypress-(eastern red cedar and aborvitae) in the yard. ... A: Mike: It would be to your advantage to have a soil sample evaluated first. By having an analysis ... | |
| Schefflera arboricola | 9/8/2009 |
| Q: Vann My schefflera arboricola has many problems: 1. Some of the leaves are turning into brownish ... A: Yara: My first thought would be a root/soil problem. Check the soil and be sure it is moist and has ... | |
| Maple Tree | 9/8/2009 |
| Q: We are sorry, but kathy crowley wasn't able to answer yourWe have an older maple tree. I don't know ... A: Leslie: I suspect that the leaf drop may be a result of an environmental stress rather than a bona ... | |
| yellow leaves on crepe myrtle tree | 9/8/2009 |
| Q: My crepe myrtle tree which is about 12 years old has shedding a lot of yellow leaves this summer and ... A: Judi: A nutrient imbalance is possible, however the soil moisture issue may still be a possibility. ... | |
| house plant infestation | 9/7/2009 |
| Q: I have a hibiscus (inside variety) which looks like it has been peppered with a pepper shaker. I ... A: Pat: See if these black specks wipe off with a wet paper towel or wet finger. If so, it may be ... | |
| pin oak "pellets" | 9/7/2009 |
| Q: We have a mature pin oak hanging over our deck (North Carolina). We have lived here 10 years and ... A: Jan: I suspect these structures may be insect related- perhaps "poop". If you want to, you are ... | |
| Rose of Sharon | 9/7/2009 |
| Q: My Rose of Sharon never really took off this spring, it grew some but the leaves were very sparse, ... A: Karen: Several things may have caused this. Sometime insects can tunnel into the stems and lead to a ... | |
| Cedar Tree with brown nodules | 9/6/2009 |
| Q: My windbreak is all cedar trees that are over 50 feet tall, I was out checking my one apple tree ... A: Terrilyn: Crabapple can develop cedar apple rust also. I do not know how sensitive your variety is ... | |
| Japanese Maple problem | 9/5/2009 |
| Q: I have grown Japanese Maples for years and on an occasion I have found that the stems turn black and ... A: Brad: The black stems may be a result of "sooty mold" a condition caused by an insect infestation. ... | |
| poplar trees | 9/5/2009 |
| Q: We have a farm yard with a lot of poplar trees. This year, for the first time in the 41 years we ... A: Claire: This sticky spray may actually be "honeydew", a clear deposit produced from insects that are ... | |
| apple plants Diseases | 9/5/2009 |
| Q: sir my plot situated in 5000 to 6000mt. height.there are some problem in apple tree: 1.Root warm ... A: Prashant: The insect borers sounds as if they are causing significant problems. These insects can ... | |
| Cedar Tree with brown nodules | 9/5/2009 |
| Q: My windbreak is all cedar trees that are over 50 feet tall, I was out checking my one apple tree ... A: Terilyn: These nodules are probably the older structures of a fungus disease called Cedar Apple ... | |
| golden jade | 9/5/2009 |
| Q: i bought a jade about two and a half months ago, that had a red bordered leaf, and i potted and ... A: Thelma: I suspect that the plant may have got too hot or dry leading to the leaf loss. Check into ... | |
| Sago Palms | 9/4/2009 |
| Q: I live in southern Ca. next to the ocean. I have several Sago Palms in my yard that are 15 years ... A: Don: I'd be inclined to focus my attention to the soil conditions. I suggest a soil test. You can ... | |
| Quaking Aspen | 9/4/2009 |
| Q: somehow i ended up growing a quaking aspen in a pot on my deck.Anyhow now i've noticed it has little ... A: Carmella: Can you take and send me a closeup photograph of these bumps? It will help me to see some ... | |
| Quaking Aspen Problem | 9/4/2009 |
| Q: I have a bad case of black leak fungi on my Quaking Aspen tree and am currently treating it with a ... A: Mike: As mentioned, rake up and burn (if your community allows it) fallen leaves and twigs sometime ... | |
| Autumn Blaze Maple Aphid Infestation | 9/3/2009 |
| Q: I have a autumn blaze maple that is about 4 years old and 30 ft tall by 20 ft wide. I’ve been ... A: Pat: It is usually not feasible nor practical for homeowners to spray this size of a tree for ... | |
| beetle looking insect feeding on spider plant | 9/2/2009 |
| Q: I see a beetle type insect crawling on my indoor spider plant. It seems to leave small spots which ... A: Linda: In order to pick the best insecticide for these critters, it is best to get them identified ... | |
| waxleaf ligustrum | 9/2/2009 |
| Q: My plant is 8' tall, over six years old. This year it has been plagued with leafrollers, but the ... A: Richard: These plants are quite durable. If the leafrollers have become one of the issues that you ... | |
| plum tree disease | 9/2/2009 |
| Q: I planted a plum tree last year and it was growing nicely. However for the last 3/4 months the ... A: Serap: The sticky appearance is usually a good indicator of an insect presence, either on that plant ... | |
| Powdery mildew. | 9/2/2009 |
| Q: I have what appears to be powdery mildew on a rosemary plant. The plant is in afternoon/evening ... A: Thomas: Powdery mildew on a plant resembles a dusting of baby powder. Some organic controls include ... | |
| viburnum problem | 9/2/2009 |
| Q: We have a Pink Dawn Viburnum that we planted about 4 years ago. It is around 7 feet high and gets at ... A: Michelle: I don't think there is a insect/disease issue with your flowering question. There is a ... | |
| Flowering Cherry Tree problem | 9/1/2009 |
| Q: We live on the NE side of Houston, TX. We have sandy soil that drains well. Planted a flowering ... A: Richard: If this tree was recently planted as it sounds, it may be experiencing transplant shock. I ... | |
| Chinese/Lacebark Elm | 9/1/2009 |
| Q: 2 years ago I purchased a Chinese elm. It had grown and really was quite healthy until about 2 days ... A: Plant Guy: These trees (Ulmus parvifolia) are very durable trees with a hardiness from zones 4 to 9. ... | |
| viburnum problem | 9/1/2009 |
| Q: We have a Pink Dawn Viburnum that we planted about 4 years ago. It is around 7 feet high and gets at ... A: Michelle: Since many leaf spots can look alike, it would be advisable to have someone look at an ... | |
| Conifers | 8/31/2009 |
| Q: Steve, thanks for all your help with my questions about the conifers and the browning of the inner ... A: Paul: I've had a chance to visit with a horticulture person whom is far more knowledgeable than I on ... | |
| Conifers | 8/30/2009 |
| Q: I have about 25 conifer trees planted around the outer perimeter of my garden, and we have just ... A: Paul: Thnx for the pics. You have a variety of evergreens in this row, including a few that appear ... | |
| Conifers | 8/30/2009 |
| Q: I have about 25 conifer trees planted around the outer perimeter of my garden, and we have just ... A: Paul: Again, I don't see anything that stands out to me as a true biotic disease. But, be on the ... | |
| willow tree losing leaves | 8/30/2009 |
| Q: We have a large willow that has started losing leaves at a daily rate. they turn yellow and on a hot ... A: Kevin: Check for any damage to the bark near the base of the tree. Check also for any apparent root ... | |
| Snow blossom Weeping Cherry Tree | 8/29/2009 |
| Q: I noticed some ants crawling on the leaves of my tree. The tree is young and I do not know if it is ... A: Ellen: Ants, by themselves should not cause any damage. I expect they are there for some other ... | |
| Trembling Aspen | 8/29/2009 |
| Q: Vann, I have a mature trembling aspen on my front lawn. I am estimating it's age at 25 - 30 years, ... A: Carol3: These swellings may be an insect borer inside the branch or perhaps a canker caused from a ... | |
| aspen tree disease | 8/29/2009 |
| Q: my aspen tree has leaves that have pea shaped things that are on the back of the leaf along the main ... A: Judy: These structures may be an insect gall called Phylloxera. Google this word for pictures to ... | |
| boxwoods | 8/29/2009 |
| Q: I have two boxwoods that have been in planters for about 3 months. Patches of leaves have begun to ... A: Frank: Boxwood is prone to a couple of root problems. Too much water can lead to big problems. Be ... | |
| Conifers | 8/28/2009 |
| Q: I have about 25 conifer trees planted around the outer perimeter of my garden, and we have just ... A: Paul: An image or two may be in order for me to have a better idea of your problem. Please note: ... | |
| monkey puzzle tree | 8/28/2009 |
| Q: I have just moved into my new house and have inherited a stunning 30 feet monkey puzzle tree. I have ... A: Tahera: The "ooze" maybe an indication of a resin or sap flow from an opening in the bark. This ... | |
| euonymus | 8/28/2009 |
| Q: the leaves are falling off,limbs and foliage have a small white tiny looking thing on them, all I ... A: Len: In my part of the world, scale insects are the big issue. Small white "specks" usually on the ... | |
| Vinca | 8/27/2009 |
| Q: Our vinca has dead leaves throughout the growth. Started two years ago along the edges. We thought ... A: Andrea: Are you referring to annual vinca (Catharanthus)? If so, there is a disease called branch ... | |
| honeysuckle plant disease | 8/27/2009 |
| Q: plant has vined vigorously but never bloomed due to infestation of what looks like house flies. ... A: Peter: I am not a good "bug person", and am unable to make a determination of identification of the ... | |
| Red Top Ligustrum | 8/27/2009 |
| Q: We have just noticed a thick white growth starting on the exposed roots of our Red Top Legustrum and ... A: Dorothy: This growth may be a type of mushroom or other fungus on the roots. It may or may not be ... | |
| Kwanson Cherry Tree is dying! | 8/27/2009 |
| Q: I need help. I have a Kwanson Cherry tree in my front yard. I have lived there for 14 yrs and it ... A: Becky: I suspect something other than this insect. Look at the trunk and larger branches for ... | |
| Conifers | 8/27/2009 |
| Q: I have about 25 conifer trees planted around the outer perimeter of my garden, and we have just ... A: Paul: Some pines drop their inner needles during the year, so this alone is not an indication of a ... | |
| Ficus Tree - shriveled leaves | 8/26/2009 |
| Q: I have a ficus tree that is about 6 feet tall and has been very healthy. Recently I noticed some ... A: Leslie: It would be helpful to get an ID on the insect that you found. Some critters can cause ... | |
| Red Emperor Japanese Maple Dying? | 8/26/2009 |
| Q: I planted an 8 foot tall Red Emperor JP this spring. It has now lost all of the red color to the ... A: Carrie: I don't think your tree is dying. Some JMs have different colored foliage during the spring ... | |
| Jade Tree | 8/25/2009 |
| Q: I have a 12 yr old jade tree - that I thought was doing great - it had lots of branches, some ... A: Mary Ann: Good Morning. If the stem fell over as a result of the mushy area, then there may be a ... | |
| Cleveland and Bradford Pear tree | 8/25/2009 |
| Q: I have both trees the Bradford Tree had a web on end of branch which I was able to cut off and ... A: Elaine: These are probably fall web worms. They are very common on sweetgum, pecans, and sometimes ... | |
| pine tree | 8/25/2009 |
| Q: "I have a Pine Tree that has a few branches that look like they are covered in black oil. Even the ... A: Mary: The black coating stuff may be sooty mold. We see this on crapemyrtle alot! Leaves/stems get ... | |
| crepe myrtles | 8/25/2009 |
| Q: We have had 4 crepe myrtles for 3 years and only 1 bloomed during the first. They all look green and ... A: Joyce: Your growing season may be shorter compared to other areas. In your area, these plants may ... | |
| tree planting | 8/24/2009 |
| Q: we live in NJ and we planted 7 2" caliber october glory maples august 19th. the weather happened to ... A: Jeff: At this time of year, watering frequency is important. I usually "flood the hole" as soon as ... | |
| weeping cherry bloosom | 8/24/2009 |
| Q: My weeping cherry bloosom is sick! My husband and I purchased this tree last summer it bloomed ... A: Lynette: Wet/poorly drained soil can create a serious stress condition than can lead to root rots ... | |
| Rose of Sharon disease | 8/24/2009 |
| Q: I have 2 Rose of Sharon trees with cluster of small greenish-brown nodules growing on them. They ... A: Laura: These nodules appear as adventitious root initials from your photo, this can occur especially ... | |
| small tan beetles on black locust | 8/24/2009 |
| Q: I have a black locust that has started to get leaves that are yellowing and dropping at a rapid ... A: Amanda: Best to get these "critters" identified so as to (1) find out if they are harming your tree ... | |
| poplars | 8/24/2009 |
| Q: I live in Southern Alberta , Canada and my question is.... The leaves on my poplars are turning ... A: Ilona: The reference I have here doesn't indicate powdery mildew occurring on Caragana, despite the ... | |
| Plum Tree Mould | 8/23/2009 |
| Q: our plum tree is covered in fruit but some of the plums have a creamy circular type mould growing on ... A: Shaz: Take a look at "Brown Rot" on Google Images and see if this looks similar to your situation. ... | |
| hedges disease ? | 8/22/2009 |
| Q: WHILE PRUNING i notice powdery mildew on leaves also a thick white substance on main branches that ... A: John: Can you send a photo of this stuff? It may be an insect infestation, but would need to see ... | |
| Emeral Arborvitae | 8/22/2009 |
| Q: I bought three arborvitae that are approximately 4 ft. high. One has been transplanted into another ... A: Betty: That's a tough one. Not being able to see and examine the plant makes it a head scratcher. ... | |
| Jasmine problem | 8/21/2009 |
| Q: I have a jasmine in my London garden which has been happily in situ for 12 years. It flowers ... A: Rachel: Hello and good morning from Arkansas. I am glad to hear from a visitor from afar! Bark ... | |
| crepe myrtle | 8/21/2009 |
| Q: I have two crepe myrtles that are 9 years old. They are in a flower bed about 10 feet apart. They ... A: Steve: The black stuff (sooty mold)is a result of the aphids. There are a few insecticides out ... | |
| Tulip Tree shedding limb bark | 8/21/2009 |
| Q: I have several tulip trees (North Central Indiana) and every summer several large and small limbs ... A: Brian: I am not aware of an infectious disease that may causes these symptoms. This may occur as a ... | |
| holly bushes | 8/21/2009 |
| Q: I have a male and female holly bush that I have planted in our landscape. Over the summer, both ... A: Janice: If you have clay in the soil, this may create a stress condition for the shrubs. If the ... | |
| majestic oak tree with a problem? | 8/21/2009 |
| Q: I have a majestic oak tree in my yard in Maryland. Recently I have noticed a series of dark ... A: Bob: Difficult to say the origin of these "blotches", but these areas may be a direct result of ... | |
| Wax Myrtle | 8/20/2009 |
| Q: We planted wax myrtles in February 09. Shortly after, we had a frost and some of the tender new ... A: Rachel: May be best to see if there is someone who can make a "house call". It is difficult for me ... | |
| southern magnolia tree | 8/20/2009 |
| Q: I have a three year old southern magnolia tree.I live in Devine Tx I have never had any problems ... A: Dawn: Magnolia is a hardy tree. If the leaves changed overnight, I would probably be suspicious of ... | |
| Honey Locust tree | 8/20/2009 |
| Q: We have a locust tree in our yard about 12 years old. This year there are very few pods on it, and ... A: Lisa: These mushrooms may represent the presence of an internal disease problem if they are growing ... | |
| Evergreen is dying | 8/19/2009 |
| Q: I have an evergreen that has been doing just fine for about 10 years. I recently noticed that a lot ... A: Erica: Those things that you mentioned are all good. I have not heard of dogs doing this type of ... | |
| Evergreen is dying | 8/19/2009 |
| Q: I have an evergreen that has been doing just fine for about 10 years. I recently noticed that a lot ... A: Erica: Good Morning- Hello Again. This Branch Canker disease mentioned in my earlier reply affects ... | |
| Evergreen is dying | 8/19/2009 |
| Q: I have an evergreen that has been doing just fine for about 10 years. I recently noticed that a lot ... A: Erica: This tree looks like a Leyland Cypress. This tree is quite susceptible to a branch disease ... | |
| New Wisteria plant dying | 8/19/2009 |
| Q: I just planted a new Wisteria plant this summer. I love the blooms and I had heard they are a very ... A: Lori: Good Morning! If the bark has been chewed away on the lower stem, and leaves and twigs are ... | |
| boxwood die back | 8/19/2009 |
| Q: I live in Iowa on boarder of area 4,5. 2 years ago I planted boxwood from Chicago land. 5 did not ... A: Richard: Replacement following removal of the diseased plant is the best. Try to get out the entire ... | |
| sticky leaves | 8/18/2009 |
| Q: Vann, I have a zebra plant for 3 years and recently it started losing leaves and I find a sticky ... A: Carolyn: Very nice plant you have! One of my favorites. The sticky stuff is probably "honeydew", ... | |
| Japanese Red Maple | 8/18/2009 |
| Q: We have a 30+ years Japanese red maple that is absolutely beautiful. Yesterday, we found the bottom ... A: June: I'm not very sure on this one. If possible, can you send a photo in a separate email? Take a ... | |
| Locust tree problem? | 8/17/2009 |
| Q: We have 3 honey locust trees in our backyard in New Haven County CT. I estimate them to be slightly ... A: Fran: The jelly stuff is probably a fungus that is strictly saphrophytic (growing on dead ... | |
| White Birch | 8/17/2009 |
| Q: We live in MN and we have a White Birch that is loosing it's leaves and the limbs look dead on 1 ... A: Deb: This situation ("weeping") does sound like a normal reaction for birch when pruning is done. ... | |
| Our flowering cherry tree has growths on the bottom of its leaves | 8/17/2009 |
| Q: My dad showed me his flowering cherry tree in our backyard. He said it has been there for 30 or more ... A: Joseph: These are leaf galls caused by a very small Eriophyid mite (not a true insect- it has 8 ... | |
| boxwood die back | 8/16/2009 |
| Q: I live in Iowa on boarder of area 4,5. 2 years ago I planted boxwood from Chicago land. 5 did not ... A: Richard: Boxwood can develop a few root diseases, including a Phytophthora root rot that is assoc./ ... | |
| Forsythia Disease? | 8/15/2009 |
| Q: I have 3 dwarf forsythia bushes. The leaves on the ends of the twigs have begun to curl up, turn ... A: J. These plants are pretty hardy. Unless the leaves are spotted, I would lean toward a potential ... | |
| Japanese Maple dwarf size when bought. | 8/15/2009 |
| Q: We have had our Japanese Maple for 18 years and never had a problem. I have noticed in the last ... A: Pamela: Examine the trunk for any evidence of bark damage (chewing, string trimmer, holes in the ... | |
| JonaGold Apple Disease | 8/15/2009 |
| Q: I have a Jonagold apple I planted a year ago. It seems to be growing very well - new growth this ... A: Rich; If leaves are curling w/o any discoloration- may indicate an insect or environmental stress. ... | |
| split bark on magnolia tree | 8/15/2009 |
| Q: We have a 6' magnolia tree with a trunk diameter of about 2". The tree was moved about a year and a ... A: Marietta: Bark splitting and loss may indicate internal decay/disease activity that is usually a ... | |
| willow tree dying | 8/15/2009 |
| Q: What would cause a willow tree that is about 15 ft to suddenly have leaves through the middle of the ... A: Silver: Be sure that the tree is getting adequate water- these trees usually like plenty of water, ... | |
| Cherry Tree disease | 8/14/2009 |
| Q: Vann, I am a fellow expert (Water Quality, Home Improvement, North Carolina). I have 3 cherry trees ... A: Steve: This does indeed sounds like "shot hole" sometimes called Coryneum Blight, a disease of ... | |
| Cleveland Pear leaves | 8/13/2009 |
| Q: We planted 3 6-8' Cleveland Select trees in the spring. We have had a very odd summer...cooler and ... A: Brandi: I agree, doesn't look like FB. That is the worse infectious disease we have here in this ... | |
| Japanese Red Maple | 8/13/2009 |
| Q: Our 35 year old Red Japanese Maple doesn't have as many leaves as it once had and looks sparse. The ... A: Walter: I appeciate your comments. It is indeed very difficult and sometimes down right dangerous ... | |
| Crepe Myrtle yellow leaves | 8/12/2009 |
| Q: I have a two year old Crepe Myrtle and the plant was healthy until about two weeks ago when I ... A: Irene: If those red/yellow leaves have some small black spots or blotches on them, then it may be a ... | |
| Flowering Plum Tree Problems | 8/12/2009 |
| Q: I planted a flowering plum tree in a flower bed approx. 4 years ago. It has grown to be quite large ... A: Donna: Too much water can create an ideal environment for root rot. A well drained soil is ... | |
| Sunset Red Maple problem | 8/11/2009 |
| Q: Our sunset maple is approximately 15 years old and we live in Central Ohio. The bark has vertical ... A: Julie: Sounds like your maple has a few issues. Can you send me a photo of a group of leaves that ... | |
| krauter vesuvius flowering plum and diseases | 8/11/2009 |
| Q: We have a krauter vesuvius flowering plum and it appears to be dying. Leaves have an orange tint ... A: Gary: If the whole tree looks in trouble, check out the trunk area, especially in the area near the ... | |
| trees dying from light green gray substance | 8/11/2009 |
| Q: I have two apple trees and one has not blossomed at the top of the tree, on the dead branches is a ... A: Jodi: Is this substance leafy or crusty-like and grows on the bark? If it is, it may be LICHENS. ... | |
| my wondering jew houseplant | 8/11/2009 |
| Q: my wondering jew has brown spots all over the leaves what should i do? A: Debra: Wandering jew can have several things that can cause spots on the leaves. Things to think ... | |
| Bradford pears | 8/11/2009 |
| Q: I have about 15 pears lining my driveway (about 6 feet from the ashpalt) - they were installed 2 ... A: Brett: Could be fire blight as you mentioned. This is a significant bacterial disease problem in ... | |
| Ficus | 8/10/2009 |
| Q: All of the ficus hedges in my yard (3 separate groupings at least 15 or more feet apart) seem to ... A: Kerry: Can you take a closeup photo of these drops on a leaf? Be sure that you review the photo on ... | |
| White Oak Disease | 8/9/2009 |
| Q: Many of the leaves on our white oak tree have yellow, yellow/pink fuzzy round balls on them. Are ... A: Debbie: These fuzzy balls are probably some type of a gall insect. Google "oak galls" and take a ... | |
| Debra Maple | 8/9/2009 |
| Q: I have a Debra Maple that is about 10 years old. It has always been slow growing but a beautiful ... A: Kathy: Lichens do not cause disease, they merely grow on the surface of older trees and shrubs, ... | |
| pecan tree unusual pealing | 8/9/2009 |
| Q: I have several Pecan trees in my back yard in Dallas Texas. One of the trees has bark pealing from ... A: Tim: That is a head scratcher for me also. What about a lightning strike? It usually runs down the ... | |
| Lacebark Elm | 8/9/2009 |
| Q: We planted our lacebark elm tree 5 years ago. Something is wrong with it, and we don't know what!! ... A: Kym: Take a close look at the base of the trunk in the area of bark peeling and see if there has ... | |
| problems with jasmin | 8/8/2009 |
| Q: Ilive in Spain and have a beautiful jasmin which I have had for years.Itis about six foot tall and ... A: Marilyn: Greetings from a far! So far you are my furtherest customer--CONGRATULATIONS!!! Browning ... | |
| Magnolia Bush | 8/8/2009 |
| Q: Our Magnolia bush is about 10 years old and was doing well until this summer. There are white fuzzy ... A: Mary Ann: The black stuff is called "sooty mold" and is a result of insect presence and feeding. ... | |
| Tree Fungus | 8/8/2009 |
| Q: I live in Staten Island, NY and have what I beleive is a Maple, that turns red in the fall. It is ... A: Greg: These gray and green crusty things are lichens--not disease causing organisms. We tend to see ... | |
| yellow something growing in house plant pot | 8/8/2009 |
| Q: I have a hmm, philadanderem (mispelled badly) and I just noticed there is a bright yellow something ... A: Cheryl: There are a myriad of fungi that can grow in soils that are rich in organic matter and do ... | |
| foxtail palm dying | 8/7/2009 |
| Q: I have a foxtail palm we planted 1 year ago. It is currently about 15' tall. About 4 weeks ago, ... A: Dawn: This shrinking area may be an indication of a serious problem- possible a terminal condition. ... | |
| OLD cherry tree rotting? | 8/7/2009 |
| Q: We have a GORGEOUS old tree by the house..beautiful pink blossoms in the spring....told it was some ... A: Susan: This tree may have some level of decay inside. It may be in the main stem or in some of the ... | |
| Pin Oak Disease | 8/7/2009 |
| Q: I have a large mature pin oak that is draining a sticky sometimes frothy white secretion around ... A: Lynn: This situation does sound like the bacterial disease called Slime Flux or Bacterial Wetwood. ... | |
| Ivy disease | 8/7/2009 |
| Q: Not sure if this is a question that comes under your category of expertise. But if your have any ... A: Christine: Greeting from Arkansas! Very nice ivy! Sometimes called variegated Persian Ivy. Leaf ... | |
| Cleveland Pear Trees | 8/7/2009 |
| Q: Our community planted Cleveland Pear trees along our streets about 5 years ago. On my property I ... A: Vic: In Arkansas, we are currently seeing many ornamental pears (Callery) defoliate after the leaves ... | |
| disfigured Gartenmeister Bonstedt Fuschia leaves | 8/6/2009 |
| Q: I've grown Gartenmeister Bonstedt Fuschias for years, both overwintered and purchased from a ... A: Maura: I strongly suspect that something is happening to the leaf as it begins to open and ... | |
| tree fungus | 8/6/2009 |
| Q: The tree in question is a sugar maple there are light free flower shaped fungus on the trunk of the ... A: Dan: If this "mushroom" is clearly growing from the trunk or roots, this may indicate some level of ... | |
| disfigured Gartenmeister Bonstedt Fuschia leaves | 8/6/2009 |
| Q: I've grown Gartenmeister Bonstedt Fuschias for years, both overwintered and purchased from a ... A: Maura: Holes in the leaf are good indicators of insect feeding. Do you think that both problems ... | |
| dwarf lime tree | 8/6/2009 |
| Q: i have a dwarf lime tree,and at the ends of the branch the end leaves have squigally lines on them. ... A: Valerie: Check out images on "Google for "Leafminer". The immature insect burrows between the ... | |
| carrotwood tree | 8/5/2009 |
| Q: I have 3 carrotwoods in my back yard around a pool in southern CA. They all seem to be losing ... A: Kief: Trees can lose their leaves for several reasons- sometimes related to root stress e.g. ... | |
| Aspen Tree Burrowing Insect Identification | 8/4/2009 |
| Q: I need to identify this insect that keeps burrowing into my aspen trees leaving behind holes in the ... A: Waleska: Best to collect a few of these "critters" in a jar or bottle and drop in to your local ... | |
| Blue Rug Wiltoni Juniper? | 8/4/2009 |
| Q: i have these and ones that are taller junipers, and i have a BAD odor around the front porch where ... A: Kim: An ammonia-like smell may help w/clues. Sometimes urine (not mine-ha-ha)can actually "burn" the ... | |
| Tulip Poplar | 8/4/2009 |
| Q: 15 year old tree leaves are turning yellow and some brown with veins turning black. Tree is ... A: Vicky: Unfortunately, no band-aid available. Those pruning paints that are sold to brush or spray on ... | |
| Crab apple tree | 8/4/2009 |
| Q: I have 3 crabapple trees and all have lost the majority of their leaves to something that has eaten ... A: Anne: Bugs aren't my best suit, but it would be best to try to find some of these critters, get them ... | |
| Tulip Poplar | 8/4/2009 |
| Q: 15 year old tree leaves are turning yellow and some brown with veins turning black. Tree is ... A: Vicky: One of my favorite trees too! They are quite plentiful here in Arkansas. I know, at least ... | |
| irregular, curly, distorted growth | 8/3/2009 |
| Q: I am a professional gardener in central California and I'd like to try to describe a phenomenon that ... A: Lesley: Several things can cause these distortions including the microorganisms such as viruses, ... | |
| japanese Maple disease | 8/3/2009 |
| Q: I have Bonfire Japanese Maple that is about 3 years old. Suddenly entire branches are dead or ... A: Kerry: The black color may be the result rather than the cause created by the apparant decay ... | |
| Live Oak disease? | 8/3/2009 |
| Q: My parents have an oak tree that developed a small split in the base of the trunk and has ... A: Matthew: I lived in Fort Myers for about 6 yrs and I can tell you all about the lightning! It can do ... | |
| Willow Tree=follow-up info | 8/3/2009 |
| Q: I have what seems to be a cocoon in every tree branch of my willow with the other leaves nibbled ... A: Dona: I am not sure how big your willow tree is. I doubt if these insect will have a major impact ... | |
| japanese Maple disease | 8/3/2009 |
| Q: I have Bonfire Japanese Maple that is about 3 years old. Suddenly entire branches are dead or ... A: Kerry: Is this whitish stuff appear as a "fuzzy" covering? and is it near the soil line? If ... | |
| Japanese Bloodgood Mapletree | 8/2/2009 |
| Q: I have a damaged Bloodgood Japanese Maple. This tree was hit by a commercial truck. The tree has no ... A: Ron: Someone really needs an "in-person" view of the tree plus an evaluation of the site and ... | |
| plants dying | 8/2/2009 |
| Q: In a section of my flower bed there is something killing my azalea bush and adjacent to it my Texas ... A: Julie: It would be impossible to determine the "cause of death" without more information and ... | |
| japanese Maple disease | 8/2/2009 |
| Q: I have Bonfire Japanese Maple that is about 3 years old. Suddenly entire branches are dead or ... A: Kerry: Symptoms of drought stress are usually not "sudden", usually a gradual process- beginning ... | |
| peach trees | 8/1/2009 |
| Q: My first peach tree was given to me two years ago. I planted it with the help from a master gardener ... A: Mrs t: If it leafed out good and leaves looked good and you don't see any evidence of damage to the ... | |
| oak tree disease | 8/1/2009 |
| Q: My oak tree has been shedding leaves throughout the spring and summer. Almost all the leaves have ... A: Bill: The spots may be a disease called anthracnose, but someone would need to see them to be sure. ... | |
| corkscrew willow disease | 8/1/2009 |
| Q: I have a corkscrew willow which has black spots on the leaves. What's the remedy? A: Fletcher: If it is a big tree, best to maintain good fertility (based on recent soil test) and ... | |
| Potted Plant Problem | 8/1/2009 |
| Q: I noticed that one of my potted house plants had white spheres that were growing on the roots and ... A: Luke: Not sure about this one either. Suggest clipping off a small root w/ these spheres on it and ... | |
| tiny green bug possibly eating mango houseplant leaf | 7/31/2009 |
| Q: i have a couple of 2 month old mango houseplants that look like somethings's eating some leaf... i ... A: Stefano: I would feel better if you used a soap designed for plant use such as SAFER BRAND ... | |
| tiny green bug possibly eating mango houseplant leaf | 7/31/2009 |
| Q: i have a couple of 2 month old mango houseplants that look like somethings's eating some leaf... i ... A: Stephano: This critter photo favors a leafhopper, however, these insects make thier living by ... | |
| loquat diseases | 7/30/2009 |
| Q: We have a 4 year old loquat tree whos leaves have suddenly started turning yellow and then brown and ... A: Karen: This is a hard one! Several possibilities. It would be best to contact your local ... | |
| Sago Palm | 7/30/2009 |
| Q: Good day Dr. We were the king and queen of the Sago Palm to our neighbors until just days ago. ... A: Chuck: If the plant went south as quick as you say, I might think more toward a soil related stress- ... | |
| pear tree dying | 7/30/2009 |
| Q: 1 have a cleveland pear tree, that the leaves are dead, don't know what to do with it, last year it ... A: Norma: In my area many of the ornamental pears look like they are getting into the fall-- purple/red ... | |
| Victoria plum tree disease | 7/29/2009 |
| Q: When the fruit is well formed , a scale appears on some fruit, also a drop, or two, of gelatinous ... A: Richard: The liquid may indicate a boring type of insect such as the Plum Curculio. Google this ... | |
| crepe myrtle | 7/29/2009 |
| Q: My crepe myrtles were recently (about 5 weeks) planted have yellow leaves on the lower portions of ... A: Sheryl: Possible transplant shock (e.g. haven't fully acclimated to new surroundings). Best time ... | |
| Japanese Red Maple | 7/29/2009 |
| Q: Our 35 year old Red Japanese Maple doesn't have as many leaves as it once had and looks sparse. The ... A: Walter: Sounds like you have gotten a lot of enjoyment from the tree. They are indeed one of my ... | |
| sick leucothoe | 7/28/2009 |
| Q: I saw your email on a website as I was looking for solutions to our coast leucothoe problem. We ... A: Carol: Possible Powdery Mildew, a fungus disease that affects many plants. Resembles baby powder ... | |
| Aristocrat pear trees | 7/28/2009 |
| Q: I planted 4 Aristocrat trees in my front yard, and 1 of them has leaves that look like its fall and ... A: Steve: If I am picturing your trees as you describe, this phenomena has been occuring on the ... | |
| Mission Fig Tree | 7/28/2009 |
| Q: Vann: I live in southern San Diego County and have 3 fig trees, 2 of them are some sort of greenish ... A: Marcia: Best to start with a soil test. Contact you local county Extension office for instructions. ... | |
| golden raintree | 7/28/2009 |
| Q: quick browning of lantern shaped pods, sporatitic yellowing of leaves and defoliation of tree. ... A: Richard: Pythium is often associated with saturated soils/lots of water in the soil profile. You ... | |
| kwanzan cherry and weeping cherry | 7/28/2009 |
| Q: I have attached pictures of my kwanzan cherry and weeping cherry. I don't know what's wrong with ... A: Tom: Scale insects make their living by sucking out plant juices. They can be important on many ... | |
| Ginko Tree | 7/27/2009 |
| Q: My Ginko Tree has the leaves brown I don't know if is too much water, is usually watered every 3 ... A: Guillermo: I'd probably hold off on the water for a bit. There is no magic formula for what is ... | |
| mugo pine, branches turned black | 7/27/2009 |
| Q: I have 2 dwarf mugo pines, both are exposed to the same elements and light. One of them all the ... A: Janet: The black material may be sooty mold, which is a fungus growing on honeydew (insect poop). ... | |
| crepe myrtle disease | 7/26/2009 |
| Q: We have a six year old crepe myrtle which is showing black spots on the leaves. A few leaves have ... A: Karla: This black spot may be a leaf disease called Cercospora Leaf spot. Google this to see if it ... | |
| magnolia tree disease / insect | 7/26/2009 |
| Q: I saw a similar question about white blotches on the stems of a magnolia tree in PA. You mentioned ... A: Karen: The white "bumps" on the wood looks like a type of scale insect. On the leaf- possible ... | |
| Weeping Cherry Tree | 7/26/2009 |
| Q: I live on Long Island, NY and I have a weeping cherry tree that was planted last summer. It was ... A: Jennifer: The "sap" exudation results from wounding- often from insect invasion into the wood ... | |
| kwanzan cherry and weeping cherry | 7/26/2009 |
| Q: I have attached pictures of my kwanzan cherry and weeping cherry. I don't know what's wrong with ... A: Tom: The resin flow that I see in the photo results from a wound in the wood-often from an insect ... | |
| Wisteria Mature robust flowering 2009 | 7/25/2009 |
| Q: Our 15 year old Wisteria Vine had a hearty bloom in 2009. On July 21st it seemed fine. On the 22nd ... A: Peter: I suppose the content(s) , especially if beach or a soapy solution might result in this. I ... | |
| Hibiscus plants | 7/25/2009 |
| Q: The flowers do not develop. What is this disease and how do I treat it with a natural product? ... A: Eleanor. More than likely this is possibly an insect such as a wooly aphid or scale insect. If ... | |
| Weeping willow fungus attack | 7/25/2009 |
| Q: I have a weeping willow that has been infected with black canker disease. The tree company that ... A: Nats: It sounds like a disease that we see here. In my area,it causes the ends of the small ... | |
| Wisteria Mature robust flowering 2009 | 7/24/2009 |
| Q: Our 15 year old Wisteria Vine had a hearty bloom in 2009. On July 21st it seemed fine. On the 22nd ... A: Peter: If it was literally fine one day and dying the next, I would not expect an infectious disease ... | |
| maple tree | 7/24/2009 |
| Q: I have a crimson maple tree that has developed a "crack" in the bark of the tree at the trunk. Is ... A: Roger: Cracks can be caused by several things including insect entrance,wounds and freeze/sunburn ... | |
| rosemary web disease | 7/23/2009 |
| Q: I have had 4 rosemary plants both planted and potted in various locations in the yard become ... A: Natalie: Thanks for your plant question. I love rosemary by the way! I suspect the webbing may be ... | |
| cherry blossom tree Kanzan | 7/23/2009 |
| Q: My tree was damaged in a recent storm and a branch split off, but inside was some white spleckly goo ... A: Victoria: There indeed might be some level of decay within. The wood usually gets soft/mushy. ... | |
| Yucca problem | 7/23/2009 |
| Q: I have 2 yuccas that I inherited when I moved into my new home 5 years ago. They were both doing ... A: Jackie; I was unable to see an image attached to you message- sorry. You had mentioned weather- ... | |
| Have found small (less than a 1/4") gray in color | 7/22/2009 |
| Q: We have a 10 year old Bradford Pear tree, and noticed holes in the trees trunk, these holes are less ... A: James: These small holes may indicated the presence of an insect borer that can tunnel into the ... | |
| Yucca problem | 7/22/2009 |
| Q: I have 2 yuccas that I inherited when I moved into my new home 5 years ago. They were both doing ... A: Jackie: Thanks for your inquiry. Would it be possible to email me a photo? Just a photo of most of ... | |
| Maple trees | 7/21/2009 |
| Q: I have two maple trees in my yard. The leaves are falling off like it is fall. I noticed the ... A: Cindy: I didn't realize that you can attach only one photo to your message- The holes definitely ... | |
| Chanticleer Pear Fungus | 7/21/2009 |
| Q: I have 7 Chantilcleer Pear trees that each year blossom beautifully in the spring with lots of new ... A: Candice: I don't think the neighbors tree is a factor. Can you send me a photo as an email ... | |
| Raised Red Spots on Maple Leaves | 7/20/2009 |
| Q: I have a young autumn blaze maple with thousands of raised red spots covering the leaves. They are ... A: This may be a gall insect rather than a disease. I am not aware of it having a significant impact ... | |
| Maple trees | 7/20/2009 |
| Q: I have two maple trees in my yard. The leaves are falling off like it is fall. I noticed the ... A: If this is an established tree (not a newly planted), I do not think the holes in the leaves are ... | |
| Pittosporum verigated (sp) | 7/20/2009 |
| Q: I live in Sydney, Australia and my two pittosporum trees have borer. I have painted rogor around the ... A: Shirley: Suggest sending your question to an entomologist, a person who has a great deal more ... | |
| Yaupon Bush | 7/20/2009 |
| Q: I have a yaupon bush that has two branches and I have cut these to look like balls. One branch is ... A: Gene: These plants are quite hardy in your area. I suspect that there is something wrong with just ... | |
| maple tree leaf | 7/20/2009 |
| Q: One of my mother -in -law's maple tree (in mn)has slightly raised red bumps on the back side of all ... A: Larry: Not sure, but these bumps may be an insect. If the tree is well established and looks good, I ... | |
| Wisconsin Oak Tree (White) | 7/19/2009 |
| Q: For the past few years my oak grows leaves which appear normal. Then later in the spring and ... A: Mary: These leaf symptoms indicate a potential root dysfunction -possible contact or uptake of an ... | |
| magnolia tree | 7/19/2009 |
| Q: My magnolia tree has white, raised, ovals all over its branches and stems. The ovals appear fuzzy, ... A: Jennifer: Possible insect since a goo comes out. Best to get someone with some bug knowledge to see ... | |
| boxwood leafminer problem | 7/19/2009 |
| Q: Vann, I hope you can help save my boxwoods from leafminers :-) Some of the leaves on my boxwoods ... A: Deb: Initially, the immature(larvae) tunnel in between the upper and lower epidermis of the leaf ... | |
| Meyers lemon tree | 7/18/2009 |
| Q: I have a Meyers lemon tree in a pot that I have had for four years. It produced its first lemon ... A: Renee: The stick stuff is called "honeydew" and is the result of an insect infestation. Aphids are ... | |
| Weeping Holly | 7/18/2009 |
| Q: I have a weeping holly that is 8 to 10 years old. Last year many of the leaves curled tightly ... A: Mary Lou: Sorry, but bugs are not best best asset! I suggest carrying a few of the affected leaves ... | |
| Crape Myrtle Disease | 7/18/2009 |
| Q: I have a very old crape myrtle which has a sticky residue over the entire plant with a few what ... A: Greta: This sticky/shiny stuff is called honeydew and is insect "poop". Aphids and a few other ... | |
| aphids | 7/18/2009 |
| Q: Vann, I think I have a serious case of aphid infestation. I haven't noticed any plants dying(yet) ... A: Deb: The sticky/shiny stuff is honeydew or insect "poop". Aphids are notorious for producing this ... | |
| boxwood leafminer problem | 7/18/2009 |
| Q: Vann, I hope you can help save my boxwoods from leafminers :-) Some of the leaves on my boxwoods ... A: Deb: Usually leafminers don't have much of an impact on the overall health of the plant. You may ... | |
| stewartia pseudocamellia | 7/17/2009 |
| Q: I have a ten foot stewartia I planted this passed spring. It receives all morning sun and couple ... A: Steve: Check buds for thrips (tiny insects-1-2mm and they are fast moving too). These insect can ... | |
| Elm tree bark peeling | 7/17/2009 |
| Q: I have a young Elm tree that was planted approximately 3 months ago. The bark has begun peeling on ... A: Laura: Not sure about this one. The sap leaking may indicate an insect that has gotten into the ... | |
| Cucumber Problems | 7/17/2009 |
| Q: Dr. Vann, We have been having white/brown spots on our cucumber plant leaves for the last two years. ... A: David: I would be very suspicious of a plant disease- probably a disease called Target spot or a ... | |
| Crype Myrtle disease | 7/17/2009 |
| Q: I have a black powder all over my crype myrtle. It also has things that look like aphids all over ... A: Ginger: This black stuff is probably sooty mold. See if it wipes off the leaf with a wet finger or ... | |
| Green Layer on my Maple Trees | 7/16/2009 |
| Q: I have two Maples in my front yard. One is a Red and the other Green. They recently were trimmed ... A: Summer: The extra light probably stimulated the growth of these organisms--may be lichens ... | |
| pine tree | 7/16/2009 |
| Q: Can you tell by the photo what could be going on with this tree? We have many others on our property ... A: Karen: Thanks for attaching a photo- helps more than you think. From your image, I do not recognize ... | |
| Wisteria collapse | 7/16/2009 |
| Q: Some three years ago we planted two plants of wisteria sinensis, in the very south of Sweden. They ... A: Martin: From your description, this plant went from healthy to "graveyard dead" literally overnight. ... | |
| Maple tree | 7/15/2009 |
| Q: I planted a seed of maple tree, it germinated but now the leafs are withering, what can I do? A: Conchita: Unfortunately, this condition may be terminal especially since the plant may be in a ... | |
| birch tree deease | 7/14/2009 |
| Q: My birch tree has a white powdering on some of the leaves. How can I identify what it is and what ... A: Joseph: Thanks for your inquiry. If the white powdery substance looks like a light dusting of baby ... | |
| dogwood | 7/14/2009 |
| Q: i have a 3 foot dogwood that the leaves are turning black and falling off and bark coming loose at ... A: shonda: Loose bark near the base of the tree may indicate insect borers that are notorious on DW ... | |
| crepe Myrtle insects | 7/14/2009 |
| Q: We have bugs that are drilling little holes right where the blooms should sprout from the base- and ... A: Lyn: Thanks for your inquiry. Holes may indicate a potential beetle infestation. Stop by your local ... | |
| maple tree | 7/13/2009 |
| Q: i have two maple trees in my back yard, both are about 20ft tall. i live in NC. i noticed this ... A: Bob: From your description, there may a couple of things causing this- difficult to say w/o seeing ... | |
| maple tree bark and leaf white spots | 7/13/2009 |
| Q: a young maple tree has bark peeling off from the base and leaves have white spot . Worried it may be ... A: DEB; Presence of the ants in the tree is probably after the fact- most likely not the cause, they ... | |
| maple tree bark and leaf white spots | 7/13/2009 |
| Q: a young maple tree has bark peeling off from the base and leaves have white spot . Worried it may be ... A: DEB: Bark peeling may indicate an underlying problem such as decay within the tree. Check to see if ... | |
| Wisconsin Oak Tree (White) | 7/11/2009 |
| Q: For the past few years my oak grows leaves which appear normal. Then later in the spring and ... A: Mary: Could you send one or two digital photos of the leaves and the overall tree? I may have a ... | |
| chanticleer pear tree | 7/11/2009 |
| Q: I noticed that my pear tree didn't seem as full of leaves this year as it usually does. I am now ... A: Nancy: If this "callery" or ornamental pear is like our "Bradford" pear here in Arkansas, the cause ... | |
| Gingo Tree with black developing on leaves | 7/11/2009 |
| Q: I have a young gingo tree and some type black fungus is developing on the leaves. It's possibly ... A: Dewey: If this black covering rubs off with a wet paper towel or wet finger, then it is sooty mold. ... | |
| indoor ficus tree | 7/11/2009 |
| Q: My ficus tree has been loosing leaves lately. On inspection of the plant, I noticed small, white ... A: Julie: These dots may be a type of insect such as scale. These "critters" make their living by ... | |
| apricot tree | 7/10/2009 |
| Q: I live in wi. this is my first apricot tree about 4-5 years old, can you take a look at the pictures ... A: Tracy: This resin flow can be an indication of insect feeding. A suitable insecticide may be ... | |
| Brown patches in rosemary | 7/10/2009 |
| Q: I've read your website about the brown, dead patches in rosemary. Our plants are only two years ... A: Michaela: Thanks for your question about Rosemary. Assuming this is an infectious plant disease ... | |
Plant Diseases
Dr Stephen Vann
Top Expert on this page
Expertise
Plant Diseases and Disorders of Lawn Grasses, Trees, Vegetables,and Ornamentals
Experience
Plant Diseases Identification and Management
Education/Credentials
B.S. Botany --- Miss. State Univ.
M.S. Plant Pathology --- Miss. State Univ.
Ph.D. Plant Pathology --- Texas A & M Univ.
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