The Washington State University Plant Pest Diagnostic Clinic
is dedicated to serving the state of Washington and its citizens by providing the highest quality service
by providing plant disease and disorder diagnosis, pest identification, and management strategies. The Plant Pest Diagnostic Clinic provides plant health problem diagnosis to homeowners; greenhouse and nursery operations; public and private landowners; and commercial growers including those involved with agriculture, horticulture, and floriculture
To submit a sample for DIAGNOSIS, please fill out a submission form (pdf) and follow the sample guidelines.
To submit a sample for VIRUS testing, please fill out a Virus Diagnostic Assay Request (pdf)
To submit samples for LITTLE CHERRY VIRUS and WESTERN X, please fill out a LCD-X-Test-Form
Washington State University operates two Plant Pest Diagnostic Clinics, in Puyallup and in Pullman. Services of either clinic are available to clients statewide; samples from eastern Washington are usually submitted to Pullman.
Please Note: We cannot accept cannabis samples due to WSU compliance with Federal policy.