Spray for thrip on basil plants.

Asked April 16, 2018, 3:09 PM EDT

Spray for thrip on basil plants.

Mercer County Pennsylvania

1 Response

Unless you are positive that the infestation is thrips, you should consider sending a specimen from the basil to the Penn State Extension Insect Identification Lab. This is a free service offered by Penn State.

The sample may be mailed to the Insect Identification Laboratory, 501 Agricultural Sciences and Industries Building, University Park, PA, 16802. Prepare the specimens for mailing by placing them in a small vial filled with rubbing alcohol and placing the vial in a plastic sandwich bag. It is also important to include an address and phone number, as well as some information about the insect, such as where it was found. The Lab will identify a specimen within a few days of receiving it.

If you are positive that you have a thrips infestation, there are several ways of dealing with it depending on how bad the infestation is and on the setting. A thrips infestation in a greenhouse will require a multifaceted approach. If you are just dealing with thrips on a few plants in a home setting, you can apply horticultural soap to the basil. Try to spray the soap to both sides of the leaves and also get it into the place where the leaves are attached to the plant stems.

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