Washington State University operates two Plant Pest Diagnostic Clinics, in Puyallup and in Pullman. Services of either clinic are available to clients statewide; however, the Puyallup Clinic generally handles samples from western Washington, while samples from eastern Washington are usually submitted to service. Both Clinics offer diagnosis of plant diseases and disorders, insect and arthropod identification, and plant/weed identification. Identifications and diagnoses are accompanied by management recommendations when appropriate. Services provided by the WSU diagnosticians are serviceThe WSU Clinics are able to process samples from Washington State, and can now accept out-of-state samples from the contiguous US. For a listing of Clinics in other states, see Other Diagnostics Resources.

Department of Plant Pathology,
PO Box 646430,
Washington State University,
Pullman WA 99164-6430