Protecting & Enhancing a Northwest Treasure

Members, donors, visitors, and volunteers have helped make the Washington Park Arboretum a Northwest treasure since its founding in 1934. The Arboretum Foundation invites you to explore the Arboretum’s 230 acres and join in our mission to protect and enhance this spectacular urban green space and world-class plant collection.

Learn about our mission and vision

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40,000

The number of plants being cared for by Arboretum arborists and gardeners.

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7,000

Number of children who participate in  the environmental education program each year.

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$1.11M

The amount we gave our partners in 2022–23 to support the Arboretum.

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6,500+

The number of hours our volunteers contributed in 2022–23.

News Articles

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Volunteers Help Restore the Arboretum on a Special Earth Day

Volunteers Help Restore the Arboretum on a Special Earth Day

Volunteers working in the Holly Collection area during Earth Day 2024.More than 150 volunteers attended our annual Earth Day at the Arboretum work-service event on Saturday, April 20. They worked all morning under the supervision of the UW Botanic Gardens horticulture...

Last Remnants of the “Ramps to Nowhere” Removed

Last Remnants of the “Ramps to Nowhere” Removed

Workers demolishing the ramps in late winter, 2024. (Photo courtesy WSDOT)From February to mid-April 2024, construction crews on the SR 520 Bridge Replacement Project used enormous excavators to demolish the final remnants of the so-called “ramps to nowhere” on the...

Smart Choices for Modern-Day Hedges

Smart Choices for Modern-Day Hedges

Camellias can provide a colorful alternative to the ubiquitous English laurel hedge. (Photo: Chris Pfeiffer)Despite being old-fashioned, hedges remain popular with home owners because of their ability to provide privacy, block unsightly views, add beauty to the...

Women Botanists and Botanical Artists: Part 6

Women Botanists and Botanical Artists: Part 6

Harlequin flowers (Sparaxis species) by Arabella Roupell, from "More Cape Flowers by a Lady."In the latest issue of the Arboretum Bulletin, manager and curator of the Elisabeth C. Miller Library Brian Thompson continues his series of book reviews focused on women...

Robin in Tree

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Support This Special Place of Solace! 

Read about our 2022–23 fiscal year accomplishments.

UW Botanic Gardens
Seattle Parks and Recreation.

There are many ways to support our work. Choose one that’s right for you.