Arboretum@90 Celebrations

A Year of Birthday Fun

Ninety years ago this year, Washington Park Arboretum was founded by a group of forward-thinking civic leaders who envisioned a glorious natural space in the heart of Seattle. Over the next nine decades, the plant collections and gardens were developed, and the Arboretum blossomed into the city’s most beloved park. (History of the Arb.)

This year, we celebrate the early visionaries; the ongoing work of the Arboretum partners at the Foundation, City of Seattle, and the University of Washington; and the generous support of our donors, members, and volunteers, without whom the Arboretum would not be possible.

Join us as we mark this milestone with a series of special events and programs.

90th Anniversary Events & Programs, 2024

  • February 13: Birthday Botanical Bash ~ gala fundraiser for the Arboretum
  • April 20: Earth Day at the Arboretum ~ volunteer work service, free tram rides, and more
  • June 28: Seattle Chamber Music Society ~ Concert Truck performance on Crabapple Meadow. Noon to 1 p.m. performance, plus free tram rides, a cupcake giveaway, educational activities, and more.
  • August 14 and 21: Music in the Arboretum ~ two performances at the Graham Visitors Center, with free ice cream (details coming soon)
  • September 29: Pups in the Park ~ unique, pet-friendly event featuring a pup parade (details coming soon)

90th Anniversary Bingo

As part of our 90th celebrations, the UW Botanic Gardens education team has created a fun bingo game that visitors can use to learn more about the Washington Park Arboretum on their next visit. It features 24 informative clues matched to different locations around the park. Aim for a bingo, or even better, a blackout!


Related Links

Event Partners

Arboretum Foundation Logo seattle parks and recreation logo
Volunteer team from Amazon volunteers to remove invasive species at the Arboretum for Earth Day in 2019

Visitors learning an African dance with the group Gansango at last year’s Music in the Arboretum.

2024 Annual Meeting Report

2024 Annual Meeting Report

Volunteer Legacy Award winnner Jenny Wyatt (center, in green apron) with friends. More than 60 Arboretum Foundation members joined us for the Annual Meeting & Picnic at the Graham Visitors Center on June 12 to hear about our fiscal-year accomplishments, listen to...

Pacific Ninebark: A Beautiful Four-Season Native Shrub

Pacific Ninebark: A Beautiful Four-Season Native Shrub

Pacific ninebark blooming in the Arboretum in early June. (Photo by Niall DunneWhether in a garden landscape or the wilds of the coastal Pacific Northwest, the bright splash of late-spring blooms produced by the Pacific ninebark (Physocarpus capitatus) is a floral...

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...