Ask a Question
Notify Me On Question Update
Email this Question
My roses and boxelder trees have sticky (sap) leaves, what is causing this problem?
Rate This FAQ
Aphids. This is a large group of insects, usually found in considerable numbers on stems, leaves and flowers of many plants, causing leaves to curl under and entire plants to wilt. Aphid nymphs and adults suck sap from plants and secrete "honeydew", a sugary excretion that attracts other insects (especially ants). Honeydew provides a good environment for the fungus “sooty mold”, a black, powdery fungus on leaf surfaces.
Recommended aphid control is: spray off plants with a stiff stream of water, knocking pests to the ground where predators will feed on them, or spray with insecticidal soap. As a last resort, chemicals such as Neem may be used. Follow label instructions.
Submit Your Suggestion
Other Questions In This Topic
- I have a stand of scrub oak trees in my front yard with large growths on the trunks and branches on the trees. Do you know what this is and what I can do about them?
- Why are my older pine and spruce trees dropping their needles?
- Last May I planted an eight foot Sub-Alpine Fir in my new yard. My soil is very sandy. We deep watered the tree once a week throughout the hot season. The tree never showed any sign of stress until now (March). The ends of the branches are turning brown. I know these trees are sensitive. What can I do to best ensure the tree survives?
- Is it healthy for Kentucky Bluegrass to be kept at a cutting height of 2 inches if a reel mower (as opposed to a mower with rotary blades) is used?
- What are the best shade trees to plant in syracuse? Is it true that if they are fast growing they tend to break easily? Is that common or am I worrying to much about that?
- What trees are recommended for West Jordan (clay soil).
- I have about an acre of commercial property that I want to control all vegetation. Is there a good ground sterilizer on the market? Where can I purchase it?
- What is killing my lawn? It was fine in the spring, and now this summer, it is looking dead in patchy spots.