Rooftop vegetable garden is ready for planting at Bread for the City in Northwest Washington, DC on Friday April 29, 2011. The garden features specialized soil made of organic and inorganic material for rooftop gardens. The 30 wooden planters are about 4 inches tall but are not separate from the soil covering the roof, so there is a 10" depth to the plant in the boxes. Ground cover plants are already on site and await a team of volunteers to plant them in the walkways to retain moisture and help keep the soil temperature stable. This will be the largest of this kind in the Metro DC area. In addition to supplementing the fresh vegetable given to the community, it will also allow local residents to grown produce that is not normally marketed in this area. USDA Photo by Lance Cheung.