WSU Plant & Insect Diagnostic Laboratories

Western Washington

The WSU Puyallup Plant & Insect Diagnostic Laboratory provides diagnostic assistance to citizens and businesses of western WA and supports the work of WSU Extension.

Plant Problem Diagnosis

In person: The Plant Clinic is open Monday through Friday from 8:00 am to 4:30 pm.


Mail packages to:

WSU Puyallup Plant Clinic

2606 W. Pioneer

Puyallup, WA 98371-4998

Diagnostic base fees start at $25.

Note: Special tests may incur additional fees.

We accept payment by cash or check only. Please make checks payable to "WSU Puyallup Plant Clinic."

For further information on submitting samples from western Washington, please refer to our website:

or contact:

Jenny Rebecca Glass

Plant Diagnostician

2606 W. Pioneer

Puyallup WA 98371-4998

Tel. 253-445-4582

Eastern Washington

The WSU Pullman Plant Pest Diagnostic Clinic provides plant problem diagnosis for Eastern Washington. The Pullman Plant Pest Diagnostic Clinic is open Monday - Friday from 8am - 5:00pm. Contact the clinic at: (509) 335-3292. More information can be found at the Clinic website:

The starting sample fee is $40.00. Additional tests may increase the fee.

Mail packages to:


WSU Plant Pest Diagnostic Clinic

316 Johnson Hall

100 Dairy Road

Pullman, WA 99164


WSU Plant Pest Diagnostic Clinic

Department of Plant Pathology

345 Johnson Hall

PO Box 646430

Pullman, WA 99164

Please make checks payable to "Plant Pest Diagnostic Clinic."

For information on submitting samples, please visit: Or contact Rachel Bomberger at (509) 335-0619