Join us for the Arboretum Expo 2022! Come explore the Arboretum for walks, talks, workshops and our 2022 online plant auction with some unique plants! Pick up Arboretum t-shirts, biodiversity sheets, educational materials and more. The Arboretum Expo runs September 9 and 10. Featured Events SoundBound Sept. 9 at 7 p.m. Hales-McKay Shelter A showcase