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Diagnostic Plant Clinic

Program Contact: Yakima Master Gardeners
(509) 574-1604 •
Yakima County WSU Extension Office
Yakima County WSU Extension Office


Master Gardeners are on hand to help you with issues in your home and back yard. Our Plant Clinic is stocked with a large library of resources, modern technology, and motivated, trained, and experienced Master Gardeners.  It helps us help you if you can send pictures to support your questions… branches of a sick plant, insects that you’ve trapped, photos, etc.

Master Gardeners Plant Clinic
The public is encouraged to contact our diagnostic clinic by telephone, email, or in person. We can be found in our clinic (see below) and at the Downtown Yakima Farmer’s Market each Sunday morning through the end of October. For better identification, you are encouraged to bring a sample of the damaged plant in a sealed Zip Lock bag.
  • Email:
  • Phone: (509) 574-1604
  • Clinic hours
    Monday, Wednesday, & Friday 9:00 to noon and 1:00 to 4:00
    2403 South 18th Street, Suite 100, Union Gap

Ring the bell for WSU Extension at the left of the front entrance.

The Extension office is open Monday – Friday, 8:00 am-4:00 pm, you can drop off samples any time. They will be saved for clinic hours. We will research your issue, and contact you as soon as possible. We suggest you take pictures, if appropriate and possible, related to your question and email them to us. That will help us diagnose the issue.