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
- We planted a new yard with several pine trees this last Fall - including sub-alpine, a young cedar, douglas fir, and a couple of sequioa .... along with the traditional small conifer bushes. With the recent wind and the sensitivies of the sub-alpines and sequoia I wanted to be sure that I fertilized, etc., a needed (watered them a little today due to strong winds).
- I have grass growing in my myrtle(I know it has another name but I can't think of it) and I would like to get out of there. How can I do that without killing the ground cover that I have?
- My front yard has large patches of dead grass. Originally I thought it might be a result of grubs, but dug down and didn't see any larvae or grub worms. The condition is worsening and now I've noticed pencil-eraser size holes throughout the dry areas. Do you know what this is and how to prevent or stop it?
- My sycamore tree has brown-reddish spots along the leaf veins. What is it?
- we would like to plant a cherry tree in our backyard for the fruit and the shade. what would be the proper kind to purchase,we like sweet cherries.
- We have a large pine tree in our yard that looks like it is dying. Can someone from extension come and look at it and tell me if it is dying or if this summer's heat has just caused it to withdraw in. It gets south and west sunlight all day long. Thanks
- Do you have tips for making my yard more colorful this spring?
- When is the best time to plant my grass in the spring? And how much fertilizer should I put on if any?