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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, 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.

Master Gardeners of King County

Program Contact: Mary Watts, KCMG Program Coordinator
206-543-0943 •

NOTICE: In accordance with the latest guidelines from the State Governor’s office and King County Department of Health regarding COVID-19, we are suspending in-person Master Gardener gatherings until further notice and are encouraging virtual meetings instead whenever possible.

The WSU Extension King County Master Gardener program provides a multitude of resources for home gardeners. This gardening information is available to the public and is

  • research-based and
  • focused on environmentally friendly and sustainable gardening practices

Explore this page and our website for more resources and FREE information available to the home gardener from the Master Gardeners of King County.


What's New?

Master Gardener Plant Sale graphic
The 2021 King County Master Gardener Plant Sale Is Coming Soon – Preview Items Starting April 15
Our Plant Sale has moved online to a newly designed online store with the thousands of herbs and heirloom vegetables, ornamental plants from specialty growers, and garden crafts you’ve come to expect. Preview selections starting at noon, April 15. Shop the Plant Sale from noon, April 21 through 6 pm, April 27. Pick up purchases curbside by appointment at locations in Bellevue, Shoreline and Auburn.

Colorful tomatoes
Growing Groceries Class – The Tomato Family – Wednesday, April 14 at 7 pm
Find out more about this family, also known as Nightshades, which includes tomatoes, potatoes, tomatillos, eggplants, and peppers. $5 suggested donation. Register today!

Growing Groceries Class – Weeds and Water – Wednesday, April 28 at 7 pm
This class on Weeds and Water covers weed identification, weeding strategies, and watering techniques. $5 suggested donation. Register today!

Ask A Master Gardener graphic
Ask A Master Gardener – Video Clinic Now Open for the Season
Our live, Video Clinic is now open for the season! We’ll hold two Video Clinic sessions each week through October 16, 2021. Bring your plant questions and join us! Read more.

Educational Resources

Annual border at the Bellevue Demo Garden
Bellevue Demo Garden Workshops – Saturdays, Now through October 2021
Topic include new plants and methods as well as current science-based research and techniques for the Pacific Northwest gardener. Saturdays from 9:30 to 10:30 a.m. via Zoom. The first event each month is free; there is a $5 suggested donation for all others. Check the schedule and mark your calendar.

Variety of vegetables
Growing Groceries Gardening Classes
Our 2021 Growing Groceries class topics range from favorites like tomatoes and small fruit to seed starting, weeds, water and pest management. Register for a class today.

Ask A Master Gardener

Ask A Master Gardener Zoom background detail
Email Clinic
Master Gardener Email Clinic – Gardening Questions? Send your gardening questions via email to a Master Gardener at

Gardening Tip Sheets

Master Gardener teaching girl to garden
Climate Friendly Gardening – Tip Sheet #14
Gardeners can help reverse the accumulation of heat-trapping gases by growing plants and building healthy soils. Find out how.

Tulips in many colors
Gardening Tip Sheets
Our gardening tip sheets provide information on a wide range of topics specific to gardening in King County and are available for download, free. Check out all of our tip sheets

Demonstration Gardens

Soos Creek Botanical Garden and Heritage Center
Demonstration Gardens
PLEASE NOTE: DUE TO COVID-19, GARDENING ACTIVITIES AVAILABLE TO THE PUBLIC ARE CANCELLED UNTIL FURTHER NOTICE. In each of these demonstration gardens, the community can see firsthand the types of plants that grow well in our area and learn recommended planting practices and overall garden care.

Become A Master Gardener

Asian woman clipping a pink rose
How to Become A Master Gardener
NEW UPDATE: Due to the impacts of the COVID-19 pandemic the Master Gardener Program of King County will not be conducting training for new Master Gardeners in 2021. We do, however, expect to accept applications in late 2021 for the 2022 training year.




Feature image by Jeswin Thomas. Small image of hellebore by Alicja.


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Spring hellebore

Gardening Classes

Many of our classes are now available online, even though our in-person workshops and talks have been canceled until further notice due to COVID-19. Check here for the 2021 Growing Groceries class schedule, Bellevue Demo Garden workshops and other KCMG Education activities.

Clinics and Gardens

King County Clinic and Garden Locations – Our in-person clinic and garden activities are canceled until further notice, due to COVID-19. Instead, try connecting with Master Gardeners through our Video Clinics (season start on April 6) and Email Clinics (year-round).

Master Gardener Foundation of King County

The Foundation is a 501(c)(3) nonprofit which provides financial support for the WSU Extension Master Gardener program in King County to support its efforts to provide research-based education about urban horticulture to the residents of King County. The Foundation website,, publishes information about Master Gardener activities, resources, newsletters, continuing education opportunities, plant sales and Foundation-related information.