Lake Wilderness Arboretum

Lake Wilderness Arboretum Maple Valley's Lake Wilderness Arboretum is a public garden in south King County, Washington with 42 acres of forest trails and display gardens.

The Arboretum is a sanctuary that inspires, educates, and connects its community to nature. Foot trails meander through 42 acres of display gardens, natural forests, an ethnobotanical trail, and the Children’s Discovery Forest. Developed and maintained primarily by volunteers, the Arboretum is protected for future generations through a partnership between The Lake Wilderness Arboretum Foundation,

Lake Wilderness Park and the City of Maple Valley, continuing to enhance the natural beauty of the community.

Poppies are poppin’!
05/26/2026

Poppies are poppin’!

Peonies are starting to show off!
05/23/2026

Peonies are starting to show off!

Another one of the great vendors from our plant sale- if you wish you’d bought something maybe you need to take a trip t...
05/03/2026

Another one of the great vendors from our plant sale- if you wish you’d bought something maybe you need to take a trip to Heronswood

If you didn’t buy that plant that caught your eye at our plant sale last weekend- try looking at Lee Farm and Nursery. T...
05/02/2026

If you didn’t buy that plant that caught your eye at our plant sale last weekend- try looking at Lee Farm and Nursery. They’re one of the great vendors at our sale.

Last sales of the spring! ☀️

Another great vendor to check out at our Spring Plant Sale
04/24/2026

Another great vendor to check out at our Spring Plant Sale

It was a beautiful day to celebrate Earth Day!
04/19/2026

It was a beautiful day to celebrate Earth Day!

03/27/2026

Looking for something to do this weekend? Explore the Arboretum using the Spring Promenade as a guide.
Enjoy!

Hey- it’s Lake Wilderness Arboretum Day!
11/01/2025

Hey- it’s Lake Wilderness Arboretum Day!

🌳 Lake Wilderness Arboretum Day 🪻

The Maple Valley City Council proclaimed today, Saturday, November 1 as Lake Wilderness Arboretum Day. The arboretum is celebrating its 60th birthday this year.

George Tersiisky, who taught Horticulture at Kent-Meridian High School, led a group of volunteers in 1965 looking at many properties before landing at the current site of the arboretum.

It spans 42 acres and consists of 5 display gardens. The arboretum is still overseen by a volunteer board with a small part-time staff of three employees. They also work closely with many groups in Maple Valley including: Maple Valley Creative Arts Council, Maple Valley Library, Tahoma School District and more!

We invite you to take a stroll through the arboretum and help us celebrate 60 years!

Good to know
10/27/2025

Good to know

Address

22520 SE 248th Street
Maple Valley, WA
98038

Telephone

+12532935103

Website

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