Thrips on roses
How can I eliminate thrips on my roses. I have several knock out roses and they get covered with thrips every year. I have used jets of water, and chemicals. But I don't want to use systemics. I dead head any buds I see infested, but they still come back. Help.
Wayne County Michigan
Rose thrips are hard to see, being about 1/20th inch long, but the damage is visible!
Thrips build immunity to insecticides and you may have to try a rose resistant to them, as described in the first link, below.
These articles will give you some options for management-
Some Rose pest references that cover more pests-
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