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Washington State University

Coronavirus COVID-19

COVID-19 Advisory: WSU Extension is working to keep our communities safe. All Extension programming is being provided virtually, or by approved plan. Effective July 6, 2021, Snohomish County WSU Extension will have a limited administration presence at Willis Tucker Park (Snohomish). The McCollum Park campus (Everett) continues to be closed to the public.  We are available via email, phone, and webconference.

MG Plant Problem Clinics

(425) 338-2400

Master Gardeners Available

Master Gardener Email:

Trained WSU Master Gardeners will take your plant problem questions via e-mail at  Please provide as much information as possible about the plant and it’s growing conditions. Photos are very helpful.

Master Gardener Hotline: 425-357-6010

Trained WSU Master Gardener Volunteers will be on duty to answer your plant problem questions from 10 a.m. to 3 p.m., weekdays, Apr. 1 thru Sept. 30. Please understand that this is a new process for us during the Covid-19 Emergency and that there are probably going to be some glitches so please have patience. Master Gardeners will be working from their homes with more limited resources but will do their best to research and answer your questions. They will also be working with only one incoming phone line, so you may need to call them back. If they call you back, their call will probably register as “restricted” on your phone. To talk to a WSU-Snohomish County Extension Master Gardener, please call 425-357-6010 from 10 a.m. to 3 p.m. weekdays, Apr. 1 thru Sept. 30.

Walk-In Diagnostic Clinic

Returning at a new location in 2022

Once this clinic returns, please bring in as fresh of a specimen as you can of the insect pest or the plant problem, which should include the diseased area, the transition area, and a healthy area, if applicable. Photos are also helpful. In the interim, you may contact the Master Gardeners by e-mail or phone, as listed above.

Community Plant Problem Clinics

Returning in 2022

Trained WSU Master Gardener volunteers conduct plant problem clinics at stores, nurseries and special events throughout the county during the growing season. At these clinics, Master Gardener volunteers are available to diagnose plant problems and give gardening advice. You are welcome to take plant or insect specimens to these clinics. For more information on the clinic nearest you, call the Master Gardener Hotline at 425-357-6010 or consult the MG Clinic Website to find a community clinic near you.