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Insect Resources


Introduction to common insects that affect wheat and small grains farmers. Each profile includes information on insect identification, detection, management, and prevention.

Timely Topics:

Special Feature

Hessian Fly

Damage caused by Hessian fly in spring wheat is becoming more frequent across parts of eastern Washington.  Crop damage from this pest may include but not limited to: stunted plants, lodging (when plants are attacked after stem-elongation), aborted tillers, and/or whole dead plants.

Top 10 Wheat Pests & Diseases in the Pacific Northwest

Top Ten Pests and Diseases in the Pacific Northwest.
Thank you to Wheat Life for this graphic. View this and more in the March 2022 publication of Wheat Life.

Interested in learning about other insects that affect wheat? Visit our Pest Insect, Occasional Pest, and Beneficial Insect lists.

Hessian Fly.
Plant Pest Diagnostic Clinic
Washington State University operates two Plant Pest Diagnostic Clinics, in Puyallup and in Pullman. Services of either clinic are available to clients statewide. For more information, visit our Diagnostic Clinic page.

Washington State University