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Coronavirus COVID-19

COVID-19 Advisory: WSU Extension is working to keep our communities safe. All Extension programming is being provided virtually, postponed, or canceled. Effective March 16, 2020, WSU Extension county offices and WSU Research & Extension Centers will be closed to the public. We are available via email, phone, and webconference.

Plant Pests and Disease

Program Contact: Nan Doolittle, Master Gardener Coordinator
(509) 962-7507 •

A Pocket Guide: Common Natural Enemies of Crop and Garden Pests in the Pacific Northwest
This quick guide can help you to to learn the main groups of natural enemies to your crops and garden pests

WSU Gardening in Washington State–Pests
WSU Gardening in Washington State–Pest Management
Many peer-reviewed publications from WSU pertaining to insect and other bug damage on plants.

WSU Hortsense–Plant Disease


Further information on pests and diseases can be found in the Master Gardener plant clinic on Tuesdays from May-October, 11:30-2:30.

Plant Clinic Forms

Plant Diagnostic Information Sheet