Two people holding flower pots with flowers in them.

Become a WSU Extension Master Gardener

Cultivating plants, people, and communities since 1973
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Join us!


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The application period for the 2026-2027 class of Master Gardeners is open from June 1 through July 30, 2026. Thank you for your interest in the WSU Extension Snohomish County Master Gardener Program!


Interested in joining the WSU Extension Snohomish Master Gardener Program? Before applying, it’s important to familiarize yourself with the expectations of the program. The process begins with submitting an application, which includes agreeing to the program’s guidelines. Our county’s application period is open from June 1 to July 30.

After applying for and being accepted into the Extension Snohomish County Master Gardener volunteer program, you will be asked to complete a background screening. WSU Extension Master Gardener interns must also complete WSU Extension’s Green School (Green School) *. All WSU Extension Master Gardeners (EMG’s) receive in-depth horticulture training provided by university faculty, staff, and specialists. Training is critical to ensure that all volunteers have access to the information necessary to support our mission.

Green School offers flexible, remote and hybrid training options. This includes self-paced online classes and online review sessions with subject matter experts from WSU. Combined with in-person activities and hands-on labs, you’ll have the flexibility to learn at home and practice with fellow volunteers.

Courses are specific to the PNW’s climate, soil, environment, insects, wildlife, and plants. Training is a big commitment and includes reading (online, no text required), homework, quizzes, in-class activities, lectures, and a final exam.

*Register for Green School: We’ll send you a registration link if accepted into the program. If you are not accepted and still want to complete Green School, we’ll send you a link to register. Green School registration will be open August 15 – September 30. Classes begin October 5.

Upon completing their training, trainees transition into being interns. As interns, they volunteer alongside certified WSU Extension Master Gardeners, enhancing their knowledge and skills while gaining comfort in community education and program participation. 
Interns are required to complete 40 volunteer hours in their first year in addition to their online and classroom training.

WSU Extension Master Gardeners are active across the state and their impacts are impressive. We have a user-friendly reporting system so that logging hours, reporting outreach and signing up for projects is simple. We’re required to report our efforts locally and to the state annually – we want to show off the good work our volunteers are doing! Check out our Annual Reports to read more. 2024 WSU Extension Master Gardener Program Annual Report

After we’ve put our outdoor gardens to bed, we start our annual renewal process for all Master Gardeners. Annual certification in the Extension Master Gardener Program is not automatic. After completion of Green School and your internship commitment, you will become certified. To maintain certification, volunteers must give at least 25 hours of service and earn at least 10 hours of continuing education each year. Volunteers who have met the minimum requirements to remain certified will be offered the opportunity to request continuing certification for the following year.

There is no fee associated with annual certification.

Or contact Snohomish County Master Gardener Program Coordinator Mary Watts.
Email:  mary.watts@wsu.edu  Phone: (425) 357-6001.

The passion and dedication demonstrated by WSU Extension Master Gardener volunteers underscores the positive impact that programs like these can have on individuals and communities. Volunteers highlight a number of benefits they receive from participating in such a program:

Being a WSU Extension Master Gardener offers a continuous learning experience. Participants deepen their understanding of horticultural science and gardening practices and stay up-to-date on the latest gardening research and techniques.

The sense of community and the opportunity to learn from fellow WSU Extension Master Gardeners contributes to a supportive and enriching environment. Sharing experiences and knowledge among members fosters continuous growth and improvement.

The core aspect of the WSU Extension Master Gardener Program is community service. Volunteers take pride in sharing their expertise to benefit local communities by offering guidance, workshops, and assistance on research-based, best gardening practices to fellow community members.

WSU Extension Master Gardeners often earn respect and recognition from their communities for their valuable contributions. This acknowledgment can be a source of pride and satisfaction, reinforcing the importance of the work they do.

Involvement in the WSU Extension Master Gardener Program provides a sense of purpose. Participants find fulfillment in contributing to a greater cause, knowing that their efforts positively impact the environment and the well-being of the community.


Two master gardeners moving compost.

If you’re passionate about gardening and want to make a positive impact, participating in the WSU Extension Master Gardener Program can be a fulfilling and educational experience. It’s an excellent opportunity to deepen your knowledge, connect with fellow gardening enthusiasts, and give back by sharing your expertise with others.


Frequently asked questions:

Washington Green School frequently answered questions.