Master Gardeners

Become a Master Gardener. We would love to have you join us! Successful applicants have a strong volunteer ethic and experience in community service. Your volunteer experience need not be in the area of horticulture. Classes are normally held at the Center for Urban Horticulture (CUH) on the University of Washington campus. Check the website for details about Master Gardener training in King County.

WSU Master Gardener Program. This program is dedicated to facilitating excellence in volunteers through education, life-long learning, and professionalism of coordinators and volunteers.


Visit the King County Master Gardener gardens: demonstration, youth, outreach and community gardens. To find a garden near you, consult the Map to King County Clinics & Gardens.

Demonstration Gardens.  See firsthand the types of plants that grow well in our area, and learn recommended planting practices and overall garden care.

Public Gardens, Arboreta, and Herbaria. (Miller Library)

Growing Groceries program in King County. Until 2018, the King County Growing Groceries Program centered on advising gardeners in community gardens in the county. This program offers an annual series of classes starting in the fall and continuing through the following spring.

Need help with your garden question? Answers are as close as your computer. Visit our Ask a Master Gardener web page for how to contact us.

Plant Clinics

King County Master Gardeners work as volunteer community educators at clinics in the area to empower citizens to incorporate sustainable horticultural practices that help to conserve our natural resources. To find a clinic near you, consult the Map to King County Clinics & Gardens.  The find the most current schedule for clinics locations and hours of operation, visit our Clinics Schedule web page.

Gardening Fact Sheets and Handbooks for PNW Gardening

  • Puget Sound Gardening Tip Sheets – lists of websites and publications that offer general gardening information for home gardeners in the Puget Sound area. Lists and Tip Sheets updated in 2017.
  • WSU Hortsense. A compilation of fact sheets for managing common landscape and garden plant problems.
  • WSU Pestsense. A compilation of fact sheets for managing common indoor pest problems.
  • Gardening in Washington State Fact Sheets – WSU Fact Sheets by topic for gardening in Washington State.
  • WSU Extension Publications. Factsheets and Extension Bulletins on a wide variety of WSU Extension agricultural research topics.
  • OSU Gardening Fact Sheets – Fact Sheets compiled by the OSU Plant Clinic that has been operational since 1954 and part of the National Plant Diagnostic Network (NPDN).
  • Pacific Northwest Pest Management Handbooks. These handbooks and online access to information provided by Central Oregon Agricultural Research Center provide a ready-reference to current information about weeds and insects.

Kid Gardening

  • Magnuson Children’s Garden. Find a wide variety of family-friendly events throughout the spring and summer!
  • Teacher Resources. Find downloadable lessons, simple gardening and nature activities and handouts for use with classes, including the WSU MG Teaching Kits – it’s “environmental education in a box” for all ages, not just kids.


There are several newsletters provided for the benefit of King County Master Gardeners. The public may find some of the articles of interest. Issues include Heads Up, published by the King County Diagnostic Lab, and The Connection, published by the Master Gardeners of King County and the MG Foundation of King County. Links to the archive of issues of these newsletters are shown below.

Ellen A’Key Memorial Grant Program

The Ellen A’Key King County Master Gardener Foundation Grant was designed to assist and support WSU Master Gardener projects in non-urban counties of Washington State. This grant was  active until 2022.

Pacific Northwest Blogs

Gardens, Clubs, and Societies

Other Resources

PNW Vegetable Extension Group. Assist with diagnoses of vegetable diseases, pests, and other problems, publishing new information about vegetable pathogens, pests and other problems; and their biology and management.

Fun Resources

Updated January 2022

Click here to Ask Gardening Questions.

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