Tribal Life Trail at Lake Wilderness Arboretum
2026-09-17 09:30 - 11:30, 2026-09-24 09:30 - 11:30, 2026-10-01 09:30 - 11:30, 2026-10-08 09:30 - 11:30, 2026-10-15 09:30 - 11:30, 2026-10-22 09:30 - 11:30, 2026-10-29 09:30 - 11:30, 2026-11-05 09:30 - 11:30 (America/Los_Angeles) and 1 more date | Tribal Life Trail, 22520 SE 248th Street, Maple Valley, WA, 98038, United States
Description
Tribal Life Trail garden focuses on plants used by native peoples of the Pacific Northwest, providing an educational platform for learning of the foods, medicines, and other uses of these plants. The trail-style demo garden is about 270 feet long at the forest edge along the arboretum meadow.

Address
22520 SE 248th St, Maple Valley 98038 within the Lake Wilderness Arboretum

Hours
Master Gardeners are on site 9:30-11:30am first and third Thursdays, April through October, and the 4th Saturday in October.

Bellevue Demonstration Garden Harvest Festival
2026-09-19 10:00 - 14:00 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
The community is invited to attend the annual Fall Harvest Festival on Saturday, September 19 from 10:00 a.m. until 2:00 p.m.
This event marks the conclusion of the growing season and offers a variety of educational and family-friendly activities.
The festival will feature a WSU Extension Master Gardener Plant Clinic, a Fall Plant Sale, fresh floral bouquets and a Garden Flea Market.
A designated photo display area will also be available for attendees wishing to take personal or family photographs.
Throughout the day, guests may participate in demonstrations highlighting Leaf Castings, Harvesting Herbs, Concrete Garden Edging, Potpourri, and Wire Cloches, as well as educational activities focused on garden themes such as Pollinators and Soil Health.
These sessions are designed to provide practical skills and inspiration for gardeners and hobbyists of all experience levels.
Children’s activities will include flower bracelets, leaf rubbings, nature’s spirals and rings, a scavenger hunt and more.
Admission to the Fall Harvest Festival is free as are demonstrations and activities. Complimentary parking will be available in the lot and along the street.
When: Saturday, September 19, 10 a.m. – 2 p.m.
Where: Bellevue Demonstration Garden
15500 SE 16th St.
Bellevue, WA
Harvest Festival Flyer

Carkeek Park Demonstration Garden
2026-09-22 09:00 - 12:00, 2026-09-29 09:00 - 12:00, 2026-10-06 09:00 - 12:00 (America/Los_Angeles) | Carkeek Park Demonstration Garden, 950 NW Carkeek Park Rd, Seattle, WA, 98177, United States
Description
An acre of themed beds joined together by gravel paths, the Gardens border a meadow, coastal forest, and the Park’s six-mile trail system. A one-of-a-kind Seattle Park feature, the Gardens’ mission is to help home gardeners envision a backyard wildlife habitat by using natives and adapted non-natives in an informal landscape style. Visitors can see a wide variety of plants that thrive without fertilizers, pesticides, or herbicides—protecting the Piper’s Creek Watershed and salmon habitat.

Address
950 NW Carkeek Park Rd, Seattle 98177

Hours
Park is open daily 6 am – 10 pm. Work parties every Tuesday from 9am-noon and every 4th Saturday of the month, also 9-noon.

Bellevue Demonstration Garden
2026-09-23 09:00 - 13:00, 2026-09-30 09:00 - 13:00, 2026-10-07 09:00 - 13:00, 2026-10-14 09:00 - 13:00, 2026-10-21 09:00 - 13:00, 2026-10-28 09:00 - 13:00, 2026-11-04 09:00 - 13:00, 2026-11-11 09:00 - 13:00 (America/Los_Angeles) and 1 more date | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Description
The oldest King County Master Gardener demo garden, it demonstrates good gardening techniques in a variety of themed beds.
Address
15500 SE 16th St, Bellevue, WA 98007, between 148th Ave SE and 156th Ave SE

Hours
Open dawn to dusk.
Gardeners on site April – October: Wednesdays and Saturdays, 9 am – 1 pm.

Soos Creek Demonstration Garden
2026-09-23 10:00 - 12:30, 2026-09-30 10:00 - 12:30, 2026-10-07 10:00 - 12:30 (America/Los_Angeles) | Soos Creek Growing Groceries Demonstration Garden, 29308 132nd Avenue SE, Auburn, WA, 98092, United States
Description

The demonstration garden is located within the Soos Creek Botanical Garden. Master Gardeners manage the planting and harvesting of the fruit and vegetable gardens.
Master Gardeners are on site to answer gardening questions Wednesday and Saturday from 10am-12:30pm.
All produce is donated to the Auburn food bank.

Address
29308 132nd Ave SE, Auburn, WA 98092

Hours
Soos Creek Botanical Garden is open to the public Wednesday to Saturday 10am to 4pm. No entry fee, donations welcome.

Seed Saving
2026-09-26 10:00 - 11:30 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Seed Saving presented by Colleen Donahue, WSU Extension Master Gardener.
Join Colleen as she shares her knowledge about saving flower and vegetable seed. Topics covered will include seed selection, harvesting, drying and storing seeds. Follow her tips and tricks to save money while making preparations to plant a beautiful, productive garden next year.
When: Saturday, September 26 10:00am to 11:30am
Where: 15500 SE 16th Street
Bellevue, WA 98007
Cost: Free
Register

Soil Nutrition 2.0
2026-10-03 10:00 - 11:30 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Soil Nutrition 2.0
presented by Karen Adams, WSU Extension Master Gardener.
Healthy soils produce nutritious foods, strong plants and protect the environment. This workshop will focus on managing and improving soil tilth for both vegetable beds and ornamentals. Learn about various soil amendment uses and benefits, specific crops and their unique needs throughout the growing season, and how to protect soil biodiversity with organic methods.

When: Saturday, October 3 10:00am to 11:30am
Where: 15500 SE 16th Street
Bellevue, WA 98007
Cost: Free
Register

Board Meeting
2026-10-08 18:30 - 20:00, 2026-11-12 18:30 - 20:00 UTC | Online via Zoom Platform
The Master Gardener Foundation of King County holds two regular meetings: recurring Board Meetings and an Annual Meeting. Board meetings are regularly scheduled from 6:30-8:00PM the second Thursday of the month, generally via teleconference. Foundation members may attend any Board meeting as observers or by invitation. Contact Board President, president@mgfkc.org, if you would like to attend. Agendas and minutes of the Board meetings are found in the Foundation Board archives.

Special meetings may be called at any time by the President or by request of the membership. Notice of special meetings will be sent to the membership via e-mail not less than 10 days prior to the date of the meeting. [MGFKC By-Laws 5.5, January 2013; Article VII, Meetings]

The Board of Directors shall hold regular meetings at such times and places as the Board decides. Board meeting times and locations are regularly published in The Connection, the Newsletter of the Master Gardeners of King County and the Master Gardener Foundation of King County. Recent issues may be found under Resources / Newsletters.

NOTE: Most meetings are conducted via Zoom. In person Board meetings are usually held in the Extension Master Gardener program office at the UW Center for Urban Horticulture, 3501 NE 41st St., Seattle. During the summer months, the Board may move its regularly scheduled meetings to various Master Gardener gardens in order to become familiar with these locations. Changes to these locations will be posted here as they become available.

Test Submission Form
2026-10-12 09:30 - 10:30 (America/Los_Angeles) | Online via Zoom Platform
Testing submission form for any technical errors.
