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Washington State University

Become A Master Gardener

Program Contact: Sarah Moore, King County Master Gardener Program Coordinator
(425)-738-0109 •

Master Gardener Volunteer Program

Applications for the 2024 Master Gardener class are now closed. Continue reading for more information.

Have you always wanted to learn more about gardening, have more of a science-based knowledge of gardening, meet new people and make a difference in the community? Then the WSU Master Gardener Program might be right for you.

As community educators, Master Gardeners work in partnership with Washington State University (WSU) Extension to educate the public and enhance the quality of life in communities by promoting unbiased, research-based gardening practices. They donate over 44,000 volunteer hours giving gardening advice and educating the public at plant advice clinics, demonstration gardens and other outreach activities.

Master Gardeners come from all walks of life. They are more than just good gardeners – they are trusted stewards of the communities in which they live.

Program Requirements

Before becoming a Master Gardener, trainees complete coursework in WSU Extension horticulture-related subjects, attend ten weeks of in-person and online classes, and volunteer 40 hours of service. At the end of the year, trainees who complete all of the requirements become certified Master Gardeners.

Congratulations 2023 intern class on becoming Certified Master Gardeners!

2024 Basic Training for the WSU Extension King County Master Gardener Program

Congratulations to the incoming 2024 class of Extension Master Gardener Trainees! 2024 class and volunteer schedule below (note, volunteer hours are self-scheduled after March 23)

2024 Basic Training Schedule


Applications for the 2024 class are now closed. To join a contact list for the 2025 application, opening in September 2024, please email and use the words ‘Becoming a Master Gardener 2025’ in the title.

Thank you for your interest in our Master Gardener of King County Program.


Feature image by Jupiter Images


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