"Fall is a great time to plant trees. And because large canopy trees provide extraordinary environmental and community benefits, Casey Trees and the District Department of the Environment (DDOE) have teamed up to offer a rebate of up to $50 to individuals who plant a tree on private property in DC in the fall of 2007."
"Ask your garden center, arborist, or landscaper for right tree, right place selection advice and for planting instructions. One rebate per residential property. Ornamental and smaller growing trees such as dogwoods, cherries and crape myrtles are not eligible for this rebate."
"Don’t have room for a tree just now? Volunteer to plant trees at a community event. Sign-up here>>Free Bonus: Next spring you’ll also receive a free Ooze Tube® watering bag for your tree."
1. Purchase a large canopy tree (such as an oak or elm).
2. Plant it at a residence in DC.
3. Pledge to water and care for it for a minimum of two years.
4. Mail your signed rebate request by Dec. 31, 2007.
5. Receive a $50 rebate check (or the full cost of the tree up to $50)
More info here.