Earth Day at the Arboretum

Sunday, April 26 @ 10 a.m.–2 p.m.

This year, we’ll be celebrating Earth Day during our annual Arboretum Spring Plant Sale, which takes place during Earth Week 2026.

Add new life and beauty to your home by buying trees, shrubs, and perennials at our volunteer-run Cloney-Harris Plant Nursery and Pat Calvert Greenhouse, located next to the Graham Visitors Center.

The sale will feature live music, horticultural demonstrations, environmental education activities, and a community tabling event. We’ll also showcase a fun selection of gardening and nature-themed items from the Arboretum Gift Shop.

Image sourced from event website.

2300 Arboretum Dr. E
Seattle, WA 98112-2300 United States
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Washington Park Arboretum
2300 Arboretum Dr. E
Seattle, WA 98112-2300

Free

Baby, Toddlers + Preschoolers, Elementary, Tweens + Teens, Adults

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Young girl feeding highland cows outside at Tulip Festival