Arboretum Expo: Tree Day 2026

A community celebration of trees and the many exciting things happening in the Arboretum lands! Join us for tours of the grounds, trails, gardens, research projects, tree climbing demonstrations, and an in-person plant sale. Take home an interesting woody plant, grown in the Arboretum greenhouse and tended to by our dedicated staff and volunteers. The Arboretum Expo will be held on the West Lawn, the Park and in The Arboretum Centre, with announcements and performances at the Gazebo.