Casey Trees is a Washington, DC-based nonprofit, established in 2001, committed to restoring, enhancing, and protecting the tree canopy of the nation’s capital. To fulfill this mission, we plant trees, engage thousands of volunteers of all ages in tree planting and care, monitor the city’s tree canopy, develop interactive online tree tools, work with elected officials, developers, and community groups to protect and care for existing trees and to encourage the addition of new ones.