John Marshall Park

Our Mission: Restore, enhance and protect the tree canopy of the nation's capital.

Trees benefit our lives in so many ways. From cleaning the air we breathe and mitigating climate change to creating vibrant public spaces. Since its inception the District has shown a commitment to this vital natural resource, resulting in the ample tree-lined boulevards, parks and green spaces that have earned D.C. the moniker the “City of Trees.” Founded in 2002 to protect this legacy and gain back lost tree cover, Casey Trees connects people to trees through continuing education and community action. Opportunities to get involved are seasonal, so check out our calendar and sign up for the Leaflet newsletter to get updates on all the ways you can help re-tree D.C.