Leafhoppers

utah home orchard guide
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Leafhoppers

Spotted asparagus beetle feeding on new asparagus spears

 Hosts:

  • apple
  • grape

Description:

The white apple leafhopper, rose leafhopper, and grape leafhopper suck leaf sap reducing plant vigor and sometimes spotting fruit with excrement (called “tar spots”). The flying adults can also be a nuisance to fruit pickers when present in high numbers in the late summer to early fall. The adults are wedge-shaped with wings meeting in a sharp peak over the back. Best control is achieved when leafhoppers are still in the immature stage (nymphs). Nymphs feed on the undersides of leaves. If a population is high, treat before older nymphs (larger nymphs with longer wing pads) are present.

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Precautionary Statement: Utah State University Extension and its employees are not responsible for the use, misuse, or damage caused by application or misapplication of products or information mentioned in this document. All pesticides are labeled with ingredients, instructions, and risks, and not all are registered for edible crops. “Registered use” pesticides may only be applied by a licensed applicator. The pesticide applicator is legally responsible for proper use. USU makes no endorsement of the products listed herein.