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
- When do I spray my apple tree so my apples dont have worms in them and with what pesticide do I spray them?
- What is the best thing to do with seedlings that are too tall for the seed starting kits? I have cauliflower and tomato plants that are 'leggy' and now too tall, but not yet ready to go outside. I received last week an advertisement about that hybrid zoysia grass that needs little watering and little mowing. Is that for real and if so, would it work in our climate? Supposedly it is cold hardy to -30. If I think that I there are gophers in my yard, what is the best way to eradicate them?
- The grass in certain areas of my lawn is not growing well. I've been told it may be due to the fact that they're adjacent to pine trees, and that fallen pine needles have caused locally acidic conditions. It is suggested that I apply Gypsum in these areas. Are the diagnoses and suggestions plausible ?
- We would like to plant a pasture (about 2 acres). We would like one that creates sod, like a lawn, rather than a bunch grass. It will be used to hold a hillside and eventually to graze a few animals. We could cut it for grass hay also. What would be the best varieties of seed to use for a pasture like this?
- I am buying a home, and have no idea how to take card of a yard and plant a garden/flowers. Do you have or know of any classes to teach these things?
- What kind of Strawberry plant do you recommend? I remember Crocket's Victory Garden recommending an ever bearing one for the New England area.
- I have a red photina thats leaves, in part of the bush, seemed like they were burnt. Is it a disease that these bushes can get? If I cut it back all the way, will all of the bush come out of it or should I get rid of the bush? The photina next to it is just fine.
- The grass under my english walnut tree is not doing well. What can i do to help the grass grow?