Washington State University Plant & Insect Diagnostic Laboratory

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 Pullman. 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 fee-based. The WSU Clinics are able to process samples from Washington State, but not from other areas of the country. For a listing of Clinics in other states, see Other Diagnostics Resources.