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Coronavirus COVID-19

COVID-19 Advisory: WSU Extension is working to keep our communities safe. All Extension programming is being provided virtually, postponed, or canceled. Effective March 16, 2020, WSU Extension county offices and WSU Research & Extension Centers will be closed to the public. We are available via email, phone, and webconference.

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. ┬áIt 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.

  • Location: 2403 South 18th Street, Suite 100, Union Gap
    (We are closed due to Covid-19 restrictions. Send your questions via email or phone message.)
  • Email:
  • Phone: (509) 574-1604

You can call and leave a message. 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.