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Plant & Insect Diagnostic Laboratory About the Plant Clinic

Examination scope

The Washington State University Puyallup Plant & Insect Diagnostic Laboratory is committed to helping the citizens of Washington State resolve their troubles with plants and insects through accurate problem diagnoses. We also provide applicable management options to a numerous state clientele like commercial growers, pest control operators, home gardeners, consultants, county agents, Master Gardeners, and research personnel.

The laboratory is currently equipped to handle samples from Washington State, particularly western Washington State, and not from other areas of the country.

Another diagnostic resource, WSU Pullman Plant Pest Diagnostic Clinic, is located on the WSU Pullman main campus. Details on services offered and contact information can be found at

To achieve an accurate diagnosis of the problems, samples should be accompanied by detailed information about the problem. Go to How to Submit a Sample for additional information. Services will not be provided without payment of diagnostic fees.

Clinic Calendar

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Jenny Glass

Diagnostic Plant Pathologist

Washington State University

Puyallup Research & Extension Center

2606 West Pioneer

Puyallup, WA 98371-4998



Please Note: We cannot accept cannabis samples due to WSU compliance with Federal policy.