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
- How do I get rid of the Quaking Aspen suckers that are coming up in my lawn without hurting the trees or the grass?
- Looks like my potted tomato plants have Fusarium Wilt and will soon die. 1)Any thing I can do to save the plants and soil? 2)Can I eat the tomatos?
- Our golden delicious apple tree drops fruit through the entire season. What are we doing wrong? It is located in our garden area and gets plenty of water. Thank you for your help.
- I just recently moved into a home that has these terrible "soda straw" type weeds that I can't get rid of. They pop apart and look like tall drinking straws. I have sprayed them with multiple rounds of poison (extra strength!) and dug them out by hand 2 or three times. They are coming back stronger than ever. What should I do?
- I would like to prune my lilac bush. What is the best time of year to do so and how much can be cut back and not harm the bush?
- Will kumquat trees grow in St. George, Utah?
- We currently have an elm tree in our front yard. It has been diagnosed with slime flux. We would like to plant another tree next to it,seeing as they said the stump was so big that they would just leave it. Will this cause a problem for any other trees? We want another large shade tree. Will it get the slime flux too if we plant it near it?
- My new lawn I had hydroseeded last year went to seed this year and and is still looking poorly is there anything I can do to bring it back to looking good again?