Fall Plant Sale

A fundraiser for Washington Park Arboretum

Sunday, September 24

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

  • 10 a.m. to 2 p.m., Pat Calvert Greenhouse open

  • 10 a.m. to noon, Cloney-Harris Plant Nursery open

This year, our fall plant sale returns as a single-day event! The Pat Calvert Greenhouse will be open from 10 a.m. to 2 p.m. while volunteers from the Cloney-Harris Plant Nursery will be on site from 10 a.m. to noon.

What you’ll find: A our 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.

Thank you! A special thanks to Swanson’s Nursery, which is supporting this year’s sale with a generous donation of flowering shrubs and perennials!

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

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

Public Celebration for “Union”

This year’s sale coincides with the public celebration of UNION, a stunning largescale outdoor sculpture in the Arboretum created by renowned Seattle-based artist John Grade. From 11 a.m. to 1 p.m., enjoy free tours of the artwork, live music, food trucks, and more.

Full details: UW Botanic Gardens “Union” Event Page 

Photo of Union: David Rosen

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!

Japanese Spicebush: A Four-Season Woodland Stunner

Japanese Spicebush: A Four-Season Woodland Stunner

Fall foliage and flower buds on a Japanese spicebush in the Arboretum's Woodland Garden. (Photo by Niall Dunne)Native to Japan, Korea, and China, Japanese spicebush (Lindera obtusiloba) is a stellar, all-season showstopper. Around mid-March, its bright-yellow,...

Woodland Meadow Project: Public Meeting Dec 7

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Jim Olsen: Our Volunteer of the Year!

Jim Olsen: Our Volunteer of the Year!

Jim Olsen receiving his award the greenhouse's monthly potluck on Halloween.Congratulations to Jim Olsen, winner of our 2023 Volunteer of the Year Award! Our volunteer programs manager, Lily King, presented the award to Jim at the Pat Calvert Greenhouse’s monthly pot...