Master Gardener Foundation of King County

Seattle Spring Plant Sale
2026-05-09 09:00 - 2026-05-10 15:00 (America/Los_Angeles)
Don’t miss the Master Gardeners booth at the Tilth Alliance Plant Sale this spring, where every plant is grown and sourced by Extension Master Gardeners! We’re offering flowering plants, perennials, ferns, houseplants, tubers and seeds. We’ll have a curated selection of native and pollinator plants, as well as some rare plant surprises. With over 1,500 plants on hand, there’s something for every gardener. Tilth Alliance will be offering edible plants at the sale, making it a wonderful one-stop destination.
Proceeds from our booth benefit the Master Gardener Foundation of King County, which supports gardening education and outreach throughout King County. We hope to see you there!
When: May 9 & 10 9am-3pm
Where: Meridian Playground
4920 Meridian Ave N.
Seattle, WA 98103

Bellevue Demonstration Garden Spring Plant Sale
2026-05-09 10:00 - 14:00 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Come shop a wide selection of locally grown perennials, annuals and herbs while getting expert advice from our King County Master Gardener volunteers!
When: Saturday, May 9, 2026 10:00 a.m. to 2:00 p.m.
Where: Bellevue Demonstration Garden
15500 SE 16th St
Bellevue, WA 98007
Parking is available both in the lot and along the street.
The plant sale is held on the second Saturday of May each year.
Celebrate the arrival of spring and discover the perfect plant for your garden or as a thoughtful gift.
From classic favorites to unique, hard-to-find varieties, the sale offers something for every type of gardener.

Vegetable starts: four-inch starts grown in the nearby greenhouse featuring tomatoes, basil, cucumbers, peppers, eggplants and more
Ornamentals: suitable for garden beds, borders and containers
Garden Market: gently used books, tools, pots and other treasures
WSU Extension Master Gardener Plant Clinic: free gardening advice and resources
Children’s Scavenger Hunt!

Purchases may be made by cash, check, or credit card.
Proceeds from the plant sale enable the Master Gardener Foundation of King County to support the activities of the WSU Extension King County Master Gardener Program.
See the Bellevue Demonstration Garden Spring Plant Sale flyer.

Board Meeting
2026-05-14 18:30 - 20:00, 2026-06-11 18:30 - 20:00, 2026-07-09 18:30 - 20:00, 2026-08-13 18:30 - 20:00, 2026-09-10 18:30 - 20:00, 2026-10-08 18:30 - 20:00, 2026-11-12 18:30 - 20:00, 2026-12-10 18:30 - 20:00 UTC and 12 more dates | 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.

Basics of Successful Vegetable Growing
2026-05-23 10:00 - 11:30 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Basics of Successful Vegetable Growing
presented by Jim Olson, WSU Extension Master Gardener, past president of the Master Gardener Foundation of King County and a popular speaker for the Master Gardener Speakers Bureau. He has long been associated with BDG and was the melon bed manager for ten years.
Learn the basic principles of vegetable growing with a focus on veggies planted in late spring. Jim will present the steps for successful vegetable production from both seeds and starts. Topics covered will include soil preparation, planting, irrigation, fertilizer, pest and disease management and more.

When: Saturday, May 23 10:00am to 11:30am
Where: 15500 SE 16th Street
Bellevue, WA 98007
Cost: Free
Register

Garden Tool Sharpening
2026-05-30 10:00 - 11:30 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Garden Tool Sharpening
presented by John Harmeling, Master Consulting Rosarian with the Seattle Rose Society.
This workshop will cover sharpening manual tools: pruners, hedge trimmers and other garden tools – did you know you can sharpen a shovel?
Attendees are invited to bring their dull tools in for a demo on how to improve their condition as well as extend the life of the tools and improve the overall gardening experience.
When: Saturday, May 30 10:00am to 11:30am
Where: 15500 SE 16th Street
Bellevue, WA 98007
Cost: Free
Register

Water Wise Gardening
2026-06-06 10:00 - 11:30 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Water Wise Gardening
presented by Dawn Rubstello, WSU Extension Master Gardener.
Watering may be the most important and most expensive task we do to be successful as gardeners.
Learn about water-saving practices and irrigation systems. Learn how to water at the most effective time of day and what your plants need.
Waste less water and save time.
When: Saturday, June 6 10:00am to 11:30am
Where: 15500 SE 16th Street
Bellevue, WA 98007
Cost: Free
Register

Growing Garlic
2026-07-11 10:00 - 11:30 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Growing Garlic
presented by Lory Armitage, WSU Extension Master Gardener.
This workshop will cover garlic cultivation: soil preparation, planting techniques and tips for fertilizing and irrigation, harvesting and storage.
Learn about seed garlic and scapes.
We will visit the garlic bed at BDG to see some grown garlic; depending on varieties and maturity, we may be able to dig some up.
When: Saturday, July 11 10:00am to 11:30am
Where: 15500 SE 16th Street
Bellevue, WA 98007
Cost: Free

Register

Beavers: Ecosystem Engineers
2026-07-25 10:00 - 11:30 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Beavers: Ecosystem Engineers
presented by Joe Mouser, Communications Manager with Beavers Northwest.
As ecosystem engineers, beavers have a big impact on the habitats that they call home. This can often be a boon for fish and wildlife sharing this space, but a headache for people nearby. In this presentation, Joe will dive into beaver ecology and benefits as well as the challenges and opportunities for living with beavers in a landscape dominated by human infrastructure.

When: Saturday, July 25 10:00am to 11:30am
Where: 15500 SE 16th Street
Bellevue, WA 98007
Cost: Free
Register

Bellevue Demonstration Garden Fall Harvest Festival
2026-09-19 10:00 - 14:00 (America/Los_Angeles) | Bellevue Demonstration Garden, 15500 SE 16th St., Bellevue, WA, 98007, United States
Bring your family, friends and neighbors to celebrate the end of our growing season!
The event will include a WSU Extension Master Gardener Plant Clinic, our Fall Plant Sale, Floral Bouquets, a Photo Op Display for selfies and family photos, Children’s Activities, and a Garden Flea Market including burlap bags.
Come learn how to make Leaf Castings, Concrete Garden Edging, Lavender products, and learn about Food Preservation.See a demo on how to sharpen dull pruner blades and enjoy the magical Dancing Water Bowl! Admission is free to the public and free parking is available in the lot and on the street.
When: Saturday, September 19th
Time: 10:00am to 2:00pm
Where: Bellevue Demonstration Garden
15500 SE 16rh Street
Bellevue, WA 98007

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
