Mission: "Restoring, enhancing and protecting the tree canopy of the nation's capital."
Contact Information: Phone: (202) 833-4010; Fax: (202) 833-4092; Address: 3030 12th St. NE, Washington; Website: caseytrees.org
Financials: Casey Trees' annual operating budget is $2.8 million.
History: This nonprofit was established in 2002. Since then, the organization has helped plant more than 10,000 trees.
How you can help: Casey Trees needs volunteers year-round to help with plantings, inventories, advocacy and tree care. More information about donating your time or money is available on the organization's website.