AboutJim Hyland Expertise I am an expert in Forestry, Forest Entomology, Forest Pest Control, and Forest Health. Extensive knowledge in Identification of insects and diseases of trees. Expert on Bark beetles and other insects that attack forests. Also a Registrated Forester with extensive knowledge in the management and care of forests.
Experience 34 years as State Pest Management Chief in a Southern state. Extensive knowledge in Forestry.
BS with major in Forest Management and Entomology Registered Forester Certified Pesticide Appicator
Question I have oak trees in yard over our backyard deck. I love the trees but the sticky substance it leaves on the deck and all the furnishings is a nightmare. Help! Is there something lacking in the health of the tree. I cannot see any bug infestation or unhealthy signs in leaves or the tree. Is this normal. I do not want to eliminate these trees.
Answer Sounds like either an insect called an aphid or a scale insect. Both suck the plant juice from the foliage and twigs and secrete a substance called honeydew which is high in sugar content and sticky. Control the sucking insects and the sap will stop dripping. Apply an insecticide to the soil around the tree. Treat with an insecticide called Bayer Advanced Tree and Shrub Insect control. The root swill absorb the insecticide and transport it to the foliage and when the insect suck the plant juice they are killed. Check with your local nursery fro this insecticide. Here is a web link to more information on this product. http://www.bayeradvanced.com/product/Tree-Shrub-Insect-Control/concentrate.html
