Ask a Question
Notify Me On Question Update
Email this Question
My petunias are horribly sticky - I assume thrips are in control although I have tried to keep them washed off (insecticidal soap) and sprayed with a systemic (orthonex). Is there anything else I might try? Would a dormant oil spray work, and if so when would I use it? Also, there are small worms that are probably chomping the blossoms. What would work to prevent or kill them? How do worms can get into my flower boxes, that are at least 6 feet off the ground?
Rate This FAQ
Petunias exude a naturally sticky substance through their stems that also spread to the flowers. Although no one knows for sure why this phenomenon occurs only in petunias, many botanists believe it is a defense mechanism to trap sucking insects such as aphids and thrips. Many gardeners find the sticky substance to be a nuisance and therefore do not grow petunias for this reason. Breeders are working on new hybrid varieties that will not have this "problem". But if this is indeed a natural process to ward of insects, the new hybrids may result in more a more sticky problem.
As for worms - if you are having leaves that are eaten, it could be budworm, which is a caterpillar of a moth and Bt, Bacillus thuringiensis is effective on controlling caterpillars.
Submit Your Suggestion
Other Questions In This Topic
- Now that the snow has melted off our lawn, we notice there are winding "trails" through the grass. One of the trails goes from a patch of vince major ground cover, across the grass to another patch of vinca major ground cover. It looks like something has pushed up the black plastic lawn edging enough to crawl underneath. There is no soil excavation on top of the lawn; only tunnels through the grass. We've never had moles or voles before that I know of so I don't know what habits they have. Do you think it could be a mouse or maybe a mole or vole? What's the best way to get ride of it?
- I'm planning on using Imidan on my fruit trees. I would like to use a sprayer, but all the application information I've found is in lbs per acre. How much Imidan should I use per gallon.
- My green peppers have black at the stems of almost every branch. Is there anything I can do to save them?
- I would like to build some grow boxes for vegetables. Do you have any recommendations what type of wood or other material should be used for a grow box?
- We have 2 honeylocust trees in our yard. I would guess "Imperial honeylocust". They seem to be about 15 years old or so. They are spaced about 20 feet apart. This spring one has leafed out and the other is still not budding or leafing out. Over the winter, the one that is not budding turned bright red on the trunk, which we have never seen before. The tree is getting a very few buds and leaves on some main branches (like suckers) but no buds or leaves on the outer limbs. Is there anything we can do to save this tree?
- What type of grass would hold up to high traffic in a yard facing south (no shade)? We are needing to re-seed or buy sod.
- Something is eating my garden. HELP! At first I thought it was snails because there were quite a few holes in the leaves of my beans and squash. Now, there are just skeleton leaves left of half my garden. I have treated for snails with PAX and for other insects with Seven. I have looked for squash bugs but to no avail. I have seen a great many ants and earwigs. Oh, and my tomatoes seem fine. Any tips?
- How can I tell if the spider I found is a hobo spider?