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Plant Diseases/Questions
| Subject | Date Asked | Expert |
| Pachira Aquatica trouble ? | 2/9/2012 | John Cawly |
| Q: We have a Pachira Aquatica plant (Money tree?) which is growing fine with new green leaves on top. ... A: Your advice was exactly correct. In low light conditions, nutrients are not needed. Also, too much ... | ||
| Pachira Aquatica trouble ? | 2/6/2012 | John Cawly |
| Q: We have a Pachira Aquatica plant (Money tree?) which is growing fine with new green leaves on top. ... A: These plants are usually pretty durable and disease free. This species is native to tropical ... | ||
| schefflera | 2/5/2012 | Dr Stephen Vann |
| 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 ... | ||
| Dying Gardinia Bushes | 2/4/2012 | Jennifer Olson |
| Q: My two gardenia bushes are about 10 years old. Just recently they started to turn yellow and lose ... A: Donald, There are many reasons why the gardenia plants have yellow leaves. It may simply be the ... | ||
| apple | 2/2/2012 | John Cawly |
| Q: How to prevent my apple trees root being rotten.I have lost my apple trees due to root failure.Is ... A: I am sorry to say that once a pathogen infects the root systems, there is little you can do to save ... | ||
| apple | 2/2/2012 | Melissa Johnston |
| Q: Melissa, can you tell me why i am loosing my apple trees every year,it seems that the trees die due ... A: Please forgive me for not answering your question yet, but my daughter has just had a baby. I will ... | ||
| Monkey puzzle tree | 1/30/2012 | Dr Stephen Vann |
| 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 ... | ||
| Problem with Potted Meyer Lemon | 1/27/2012 | Jennifer Olson |
| Q: I have a dwarf meyer lemon tree which I purchased about a year ago. It is potted in a large pot ... A: It is probably not necessary to spray the leaves with tap water unless you are trying to wash the ... | ||
| Orchid Help(1) | 1/27/2012 | Dr Stephen Vann |
| 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 | Dr Stephen Vann |
| 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 ... | ||
| Grapefruit houseplant | 1/27/2012 | kathy crowley |
| Q: I planted a grapefruit seed almost 20 years ago, and it has grown into a nice healthy tree about 8' ... A: The scale sucks the liquid out of the leaves of the plants. Your tree is unhappy and there is help ... | ||
| Problem with Potted Meyer Lemon | 1/27/2012 | Jennifer Olson |
| Q: I have a dwarf meyer lemon tree which I purchased about a year ago. It is potted in a large pot ... A: , It sounds like your lemon tree is receiving lots of love and care which is wonderful. The ... | ||
| Diseases of pomogranate | 1/26/2012 | Melissa Johnston |
| Q: Respcted sir In my area large group of farmers are initiating pomogranate cultivation our lands are ... A: Pomegranates are remarkably free from any pests and diseases and because of this, there is no ... | ||
| Janet Craig Lemon Lime Dracaena Plant | 1/25/2012 | Jennifer Olson |
| Q: 5 months ago I got a Lemon Lime plant for my living room, when i brought it home my husband changed ... A: I would encourage that you (and your hubby) be patient with the plant. At this point, if most of ... | ||
| soil | 1/25/2012 | Melissa Johnston |
| Q: What is PH factor and how it is related to soil.What is best PH level and how to improve good PH in ... A: pH factor is a test of the acidity or alkalinity of something. The scale goes from 1 to 14 with 7 ... | ||
| fertilizer | 1/25/2012 | Melissa Johnston |
| Q: Melissa I have hears that leaves of apple tree should be removed sooner after fall,Is there any ... A: The leaves should be removed as soon as possible to prevent overwintering insects from settling in ... | ||
| orchid help | 1/20/2012 | Melissa Johnston |
| Q: PLEEEEEEEEEEEEEAAAAAAASSSSSEEEEEEEEEEE!!!!!!!!!! I NEEEEEEED HEEEEEEELP!!!!!!!!! My orchid has these ... A: It sounds like you have mealybugs. Mealybugs are generally white and look cottony or fuzzy. They ... | ||
| Stephanotis leaf problem | 1/19/2012 | kathy crowley |
| Q: I just got a stephanotis plant , I keep it in the kitchen right now, the leaves look as if something ... A: Your plant can have a scale issue or fungus. Do not over water or you could have root rot, also ... | ||
| Brown leaves on tomato plants | 1/18/2012 | John Cawly |
| Q: Tomato leaves are discoloring and looking sick and not growing to full size. They have plenty of ... A: These symptoms are classic for a tomato (or tobacco) virus. The lesions (yellowing and dying spots) ... | ||
| Tomato leaves | 1/18/2012 | Dr Stephen Vann |
| 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 | Dr Stephen Vann |
| 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 ... | ||
| Marigold disease | 1/11/2012 | John Cawly |
| Q: I love Marigold. Each year I plant marigold in full sun near borders to give color to my yard. They ... A: I am very sorry for not answering sooner. Since I am not an expert on insects, I am afraid that I ... | ||
| arboricola plant disease | 1/10/2012 | John Cawly |
| Q: We've had this plant for over a decade. It's about 6' and has white spider web like spots on it.How ... A: I am curious which "arboricola" plant species you are talking about? Is this commonly called the ... | ||
| White growth in soil | 1/10/2012 | Dr Stephen Vann |
| 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 ... | ||
| ponytail palm | 1/9/2012 | Melissa Johnston |
| Q: my 4 yr old ponytail palm- indoors-- gets a brown withering discloration on the leaves which travels ... A: It sounds like your ponytail palm probably has some kind of fungal disease. It would be hard to ... | ||
| emerald green abrovitae | 1/9/2012 | Jennifer Olson |
| Q: my 2nd winter transplants about 30" tall are drooping and turning brown, I live in northern nevada ... A: It sounds like the problem with your arborvitae is winter dessication injury or winter burn. This ... | ||
| lilac tree disease | 1/8/2012 | Melissa Johnston |
| Q: hope you can help me here. I had three lilac trees in my garden, last year one of them budded up, ... A: I particularly hate to hear of problems with lilacs. Basically, there are three things that I can ... | ||
| Dracaena Massaganea | 1/8/2012 | Melissa Johnston |
| Q: I have recently been given a Dracaena Massaganea in very poor condition. The plant is about 6 ft ... A: The cold drafts could indeed be responsible for the problems with this Dracaena, so giving it a good ... | ||
| Aloe Vera abnormal leave growth | 1/4/2012 | Dr Stephen Vann |
| 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 | Dr Stephen Vann |
| 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 ... | ||
| Cobwebs on Dwarf Meyer Lemon Tree | 1/2/2012 | kathy crowley |
| Q: I purchased my Meyer Lemon tree last May and kept it outside until Fall where it is now in a sunny ... A: Would need more information as there are good webs and bad webs. This article I found may help. ... | ||
| aphids spreading | 12/30/2011 | Dr Stephen Vann |
| 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 ... | ||
| Myer's Lemon Tree | 12/30/2011 | Melissa Johnston |
| Q: I live in N. W. Florida and have had my tree in the ground since last March. I bought it with about ... A: Actually, your last information helps. If your tree is already that big, then it should be fairly ... | ||
| apple tree health | 12/29/2011 | Dr Stephen Vann |
| 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 ... | ||
| apple tree health | 12/29/2011 | Melissa Johnston |
| Q: I have an apple tree, maybe 20 years old...that in the last two years, has been hit with borers, and ... A: Yes there is a solution. Fertilome makes a product called Borer, Bagworm, Tent Caterpillar and Leaf ... | ||
| palm tree | 12/28/2011 | Melissa Johnston |
| Q: Would you know how to fix a problem with a palm tree? See attached. the leaves are curling. ... A: While your palm tree will never look "normal", it might still be an interesting specimen tree, so ... | ||
| Myer's Lemon Tree | 12/26/2011 | Melissa Johnston |
| Q: I live in N. W. Florida and have had my tree in the ground since last March. I bought it with about ... A: It sounds to me like your lemon tree has aphids on it. Look on the underside of the leaves to see ... | ||
| apple | 12/25/2011 | Melissa Johnston |
| Q: MELISSA A VERY USEFUL SPRAY SCHEDULE WAS RECEIVED BY ME,BUT I AM IN DOUBT CAN SPRAYING OF SULPHER ... A: I am glad the spray schedule was useful. I am in the process of looking up everything I can about ... | ||
| plants underneath carrotwood tree | 12/21/2011 | kathy crowley |
| Q: I have tried growing various annuals and perennials under my large carrotwood tree on the east side ... A: The problem is the Carrotwoood Tree is a water sucking beast that robs your whole yard of water. ... | ||
| aloe vera plant | 12/18/2011 | Melissa Johnston |
| Q: ..Help..I planted a few aloe plants to give for gifts this Christmas; however; some of the tips have ... A: I wouldn't worry too much. I think you just got the plants a little too wet. Aloes prefer to stay ... | ||
Plant Diseases
Melissa Johnston
Top Expert on this page
Expertise
Plant diseases, landscaping, tropical plants, roses, herbs, plant care, grafting, horticulture, plant identification, anything about plants I can likely answer.
Experience
35 years experience in various plant businesses, 1984 Certified Texas Master Gardener.
Organizations
Master Gardener Association of Texas charter member
Publications
none as of yet, but I have a plant q&a book I am in process of submitting.
Education/Credentials
Magna cum laude graduate of Texas A&M, 1978
Awards and Honors
Plant growing awards, highest grade for Texas Master Gardener graduates.
Past/Present Clients
Past member of Allexperts.com and was very highly rated. Owned landscape company in the past, Almost Paradise, and was very successful despite little equipment, no help, and no advertising. Lived well for two years until 9/11.
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