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

icon of trees

40,000

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

icon of a child

7,000

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

hands and heart icon

$1.32M

The amount we gave our partners in 2021-22 to support the Arboretum.

volunteer hours icon

6,000+

The number of hours our volunteers contributed in 2021.

News Articles

See all news articles

2022 Annual Meeting Report

2022 Annual Meeting Report

We had a good turnout for our Annual Meeting on June 15—our first in-person version of the event in three years! More than 70 Arboretum Foundation members joined us to hear about our fiscal-year accomplishments, listen to updates from our UW and City partners, and...

Snakebark Maples of the Arboretum

Snakebark Maples of the Arboretum

We admire the stripes of tigers, zebras, and exotic reptiles as marvels of natural pattern. The plant world has its fair share of stunning striation, too, perhaps no more astounding than in the snakebark maples (including the Japanese red snakebark maple, Acer...

Earth Day Volunteers Pull 50+ Cubic Yards of Weeds!

Earth Day Volunteers Pull 50+ Cubic Yards of Weeds!

A total of 116 volunteers participated in our annual Earth Day at the Arboretum work-service event on April 23. They removed more than 50 cubic yards of ivy, blackberry, and other invasive weeds from plant collection beds and natural areas—covering a combined area of...

Robin in Tree

BECOME A MEMBER TODAY!

Support This Special Place of Solace! 

Read about our 2021–22 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.