Fall Plant Sale

A fundraiser for Washington Park Arboretum

Sunday, September 15
10 a.m. to 2 p.m.

Graham Visitors Center
Free parking and admission
All plant purchases tax free!

Fall is the best time to plant trees and shrubs in the Pacific Northwest, so don’t miss our fall sale hosted by the knowledgeable and hard-working volunteers from the Pat Calvert Greenhouse and the Cloney-Harris Plant Nursery.

What you’ll find: A unique selection of trees, shrubs, perennials, ferns, and ornamental grasses. We’ll also have a nice selection of garden- and nature-themed gifts on sale, including outdoor decor, garden tools, and books.

Purchases help support youth environmental education, tree care, and volunteer programs at the Arboretum!

Questions? Please contact info@arboretumfoundation.org or 206-325-4510.

Shopper smiling with his collection of cuttings from the Pat Calvert Greenhouse

AT THE GREENHOUSE: A fabulous selection of young shrubs and trees propagated from the Arboretum collection.

Locating Our Plants

The greenhouse and nursery can be found just south of the Graham Visitors Center, directly behind the large greenhouse structure at the south end of the Visitors Center parking lot. From the southeast corner of the Visitors Center Parking Lot, follow the gravel path around the side of a greenhouse structure.

  • The Pat Calvert Greenhouse Complex (featuring a Sunhouse and Shadehouse) will be directly in front of you as you curve around the large greenhouse structure.
  • The Cloney-Harris Plant Nursery (formerly the Plant Donations Nursery) is just to the southwest of the Greenhouse Complex, next to Arboretum Drive, and can also be accessed via the Visitors Center terrace.

Blue or red price tags only: You’ll see signs to help direct you to the greenhouse and nursery and to identify plants for sale. Select only plants that have red (greenhouse) or blue (nursery) price tags on them! Please do not take plants without those tags, because they might not be ready for purchase!

Shopper contemplating a purchase at the Plant Donations Nursery

AT THE NURSERY: A great selection of seasonal perennials, native plants, pollinator plants, and more!

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...