Fall Plant Sale

A fundraiser for Washington Park Arboretum

September 9 to 30, 2023 (tentative)
Dawn Till Dusk

Graham Visitors Center
Free parking and admission

  • 25% OFF Pat Calvert Greenhouse plants (those with RED TAGS) for duration of sale!

  • Shop without the crowds and pay online or at the Gift Shop!

Last year’s multiple-day Arboretum Fall Plant Sale was a big success, so we are continuing with the same format for 2023. The sale will run for three weeks, from September 9 to 30. Customers will be able to select their plants from our greenhouse and nursery and check out either onsite (during gift shop hours) or online.

The Pat Calvert Greenhouse is open whenever the park is open—dawn to dusk. You are welcome to browse their selections at your leisure. Our helpful volunteers will be onsite at select hours (see below) to help you with plant selection.

Two ways to pay: 1) At any time using our new online checkout system; instructions below. 2) At the Arboretum Gift Shop, open in the Visitors Center from Tuesday to Sunday, 10:00 a.m. to 4:00 p.m. NOTE: The Gift Shop is still operating card and check only; we are not carrying cash.

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.

Knowledgeable Plant People—Onsite Hours

The volunteers who run our greenhouse and nursery programs love to share their knowledge of plants and are ready to help! During the sale, volunteers will be on-site and available to answer questions during the following times:

Greenhouse volunteers: Tuesdays and Thursdays, from 10 a.m. to 12 p.m.

Nursery volunteers: Wednesdays, from 10 a.m. to 2 p.m.

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!

Paying Online

To pay for plants via the web, go to our online check out system (bit.ly/payforplants). Click “Pay for Plants Now,” and you’ll to be taken to a screen where you can select the color of the tag (red or blue) on your plants.

The online checkout feature two main items: “Pat Calvert Greenhouse RED TAG PLANTS” and “Cloney-Harris Plant Nursery BLUE TAG PLANTS.”

  • Select the button for either “RED TAG PLANTS” or “BLUE TAG PLANTS,” corresponding to the tag is on the plant(s) that you are buying. (You can add more than one red or blue tag plant to your cart at a time!)
  • Once on the screen for Red Tag or Blue Tag plants, use the “select an option” drop-down menu to choose the price shown on your RED or BLUE tags.
  • Use the + or – buttons to adjust for quantity.
  • Select “Add to Cart” after EACH different price.
  • To add a plant with a different colored tag to your cart, scroll to the bottom of the screen and, under “Similar Items”, click the photo link for the other plant tag option.
  • The 25% discount on Pat Calvert Greenhouse plants will be reflected automatically in your cart.


  • At the top right of your screen, click the shopping cart icon.
  • Click the “Checkout” button (a Google or Apple Pay button may also appear as an option if you have those saved).
  • Complete purchase with card information.
  • Click “Place Order.”


Thank You!

For supporting the Arboretum Foundation and our volunteer plant programs with your purchases!

Shopper contemplating a purchase at the Plant Donations Nursery

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

Arboretum Launches Broad Community Survey

Arboretum Launches Broad Community Survey

On Mother's Day 2023, the Arboretum Foundation and UW Botanic Gardens launched a broad, state-funded survey to learn about the needs and preferences of our community regarding the future of the Washington Park Arboretum. We're hoping to get feedback both from current...

Hidden Treasure of the Arboretum: Sichuan Mountain Ash

Hidden Treasure of the Arboretum: Sichuan Mountain Ash

PHOTO: Sorbus setschwanensis blooming in the Arboretum in May. The Arboretum's prized mountain ash (Sorbus) collection is in flower. One of the more unusual species in the collection is the Sichuan mountain ash (Sorbus sichuanensis), from the highlands of western...

Earth Day Volunteers Helped Restore the Arboretum

Earth Day Volunteers Helped Restore the Arboretum

The Earth Day volunteers and their weed pile at the Broadmoor fence project.More than 180 volunteers worked with Arboretum garden staff at our annual Earth Day work-service event on April 22, pulling noxious weeds and beautifying our little slice of the planet! The...