
Lake Wilderness Arboretum Foundation
Maple Valley's Lake Wilderness Arboretum is a public garden in south King County, Washington with 42 acres of forest trails and display gardens. To develop and maintain the Lake Wilderness Arboretum in a way that preserves and displays Northwest ecosystems and cultivated landscapes in an environment that acts as a wildlife sanctuary. The Foundation will promote horticultural science and conservation, as well as provide opportunities for education and passive recreational experiences.

Lake Wilderness Arboretum Foundation
The Lake Wilderness Arboretum Foundation is a nonprofit organization with the EIN 91-6067924. It serves as the steward for the Lake Wilderness Arboretum, a 40-acre arboretum located in Maple Valley, Washington. The foundation is responsible for managing and maintaining the arboretum, which is known for its focus on Northwest native plants and its extensive collection of Western Azalea (Rhododendron occidentale), featuring over 200 selections of the species[1][2].
History and Establishment
The Lake Wilderness Arboretum was initially established as part of a nonprofit effort in 1965, with its design completed in 1970. The Western Azalea Garden was dedicated in June 2000. In January 2003, the City of Maple Valley finalized the transfer of Lake Wilderness Park and the Arboretum from King County. Shortly thereafter, in April 2003, the arboretum's name was changed from South King County Arboretum to Lake Wilderness Arboretum. The name of the foundation was updated to Lake Wilderness Arboretum Foundation in 2007[1].
Activities and Community Engagement
The Lake Wilderness Arboretum Foundation is involved in various community activities and events throughout the year. These include environmental fairs, plant sales, and community clean-up events, which aim to promote sustainability and environmental awareness. The foundation organizes events such as the Earth Day Fair and the Spring Plant Sale, which serve both as educational opportunities and fundraising initiatives for the arboretum[3].
Mission and Operations
As a mostly volunteer-driven organization, the Lake Wilderness Arboretum Foundation operates with limited resources but strives to maintain the arboretum as a vibrant community asset. The foundation oversees the daily operation of the arboretum, ensuring it remains open to the public free of charge, in line with its mission to inspire, educate, and connect the community with nature[5].
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Maple Valley
Lake Wilderness Arboretum – Building a sanctuary to inspire, educate and connect us to the natural world. Welcome Spring Delights at the Arboretum Earth Day Fair The Maple Valley Earth Day Fair started in 2024 to celebrate Earth Month in April by promoting environmental practices and activities for kids and adults and to raise general awareness of local sustainability resources. This is a fun and free interactive event to bring our community together to protect the nature around us. httpswww. maplevalleywa.
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From Social media
News about Lake Wilderness Arboretum Foundation from their social media (Facebook and X).
- Lake Wilderness Arboretum Foundation
- 2025-08-02
Come join us and see our new permanent art installation in the Children’s Discovery Forest. (fb)
Liked (5) Commented (1)- Lake Wilderness Arboretum Foundation
- 2025-07-26
Have you put Tuesday nights at the Arboretum on your summer calendar yet. (fb)
Liked (5) Commented (1)Discussions
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How can we enhance community engagement during events like the Earth Day Fair to foster a greater sense of environmental stewardship among residents?
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Brooklyn Simmons
2 days ago
Odpovědí v diskuzi
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What types of educational programs or workshops could the Lake Wilderness Arboretum implement to support local sustainability practices for families?
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Brooklyn Simmons
2 days ago
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Together, we can make a real impact in communities around the world. Help us bring hope and support.
🌱 Excited to see our community come together at the Earth Day Fair! Let's celebrate nature and learn how to protect our beautiful planet. Can't wait for all the fun activities! 🌍💚

Brooklyn Simmons
Product Manager
🌼 Just signed up for the Earth Day Volunteer Day! So happy to help care for our local sanctuary. Together, we can make a difference for our environment! 🌳✨

Brooklyn Simmons
Product Manager
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