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
- I just moved to South Jordan and I have clumps of grass pok-a-dotting my lawn. Some say it is crab and others say Johnson. The clumps are hard and raised.
- I love to golf. One of the reasons I love to golf is that I love the serenity of a golf course and especially the beautiful mature trees of all sorts. The Globe Willow in particular is my favorite because of its shape and size so I decided to purchase one and plant it in my backyard. I have read several articles that talk about these trees being very suceptible to disease and I wondered if it was as much of a problem here in Utah with such cold winters for half the year. I don't want to watch this tree suffer its whole life and end up taking it down. I live in the Cottonwood Heights area. Can you help with any advice?
- I am going to overseed my west lawn. Do I need some type of covering (straw, peat, etc.) to help keep the seeds in place?
- How to get rid of Goat Head Thorns?
- 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.
- How do I keep lady bugs out of my house? Also, how do I keep out Asian Beetles?
- Last summer I made some strawberry jam which I water canned in pint jars according to the directions in the pectin box. It seemed that all the lids sealed (they all popped). Now, though, the jam doesn't look quite right to me--it's a bit brown, especially toward the top of the jars. I'm a little wary of eating or even trying it. What could have caused this? Should I throw it out?
- I would like to find out where I can obtain a list of the daily rainfall/precip totals for the Logan area.