The Arboretum at Green Woods, located at Green Woods Charter School in Philadelphia, Pennsylvania, is a living classroom dedicated to fostering environmental stewardship, ecological literacy, and community engagement through the study, preservation, and restoration of trees and woody plants. The Arboretum at GW provides students and visitors with opportunities to explore biodiversity, understand the ecological importance of trees, and engage in hands-on conservation efforts. 

The Arboretum features a diverse collection of native and non-native trees and woody taxa across the school campus, including notable species such as Sweetbay Magnolia (Magnolia virginiana), Pin Oak (Quercus palustris), Eastern Redbud (Cercis canadensis), Bald Cypress (Taxodium distichum), River Birch (Betula nigra), Serviceberry (Amelanchier spp.), American Holly (Ilex opaca), Eastern White Pine (Pinus strobus), and Buttonbush (Cephalanthus occidentalis). The Arboretum features educational signage with QR codes linking visitors to student-created research and ecological information.