Skip to main content Skip to navigation
Plant & Insect Diagnostic Laboratory About the Plant Clinic

WSU Puyallup Plant & Insect Diagnostic Laboratory

A Note to Clients during COVID-19

Updated 3/31/2020: Due to COVID-19 management strategies, the WSU Puyallup Plant and Insect Diagnostic Lab will be modifying operating procedures as follows:

WSU Extension has announced that WSU Research & Extension Centers and other Extension locations are CLOSED to public entry but that WSU is committed to continuing its work.

Digital Means

The lab is encouraging the use digital means for diagnostic purposes when practical.

  • Please email clear photos of the damaged plant or the insect.
  • For plant problems, images showing the plant in the landscape often provide additional clues as to the cause of the problem.
  • Photos showing the base of the plant at the soil line may also be illuminating when trying to determine root issues.
  • These images should be accompanied by information describing the problem and the plant care (who, what, where, when, why are great questions to explain).

Physical Samples

  • Currently WSU has directed that only mission-critical research and Extension work may be done at the Extension Center—all other work should be done remotely if possible. Please email should you have an urgent agricultural sample. Thank you.
  • As possible, please hold onto samples that can wait until after conditions resume to normal. This will allow the diagnostician to address more urgent concerns.

Thank you for your patience and for your understanding. Wishing you good health. Appreciate everyone’s efforts to help slow the disease progress curve for COVID-19.

Jenny Glass, Diagnostician
253-445-4582 office
253-223-7406 mobile

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. For details on services offered and contact information, visit the WSU Pullman Plant Diagnostic Clinic site.

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

More events »


Jenny Glass
Diagnostic Plant Pathologist
Washington State University
Puyallup Research & Extension Center
2606 West Pioneer
Puyallup, WA 98371-4998
253-445-4582 office
253-223-7406 mobile

Cannabis leaf

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