PHILADELPHIA GREEN

Here's a link and description of Philadelphia Green:

A program of the Pennsylvania Horticultural Society, Philadelphia Green® is the nation’s most comprehensive urban greening program. Since 1974, Philadelphia Green has supported the development and ongoing care of community gardens, neighborhood parks and high-profile public green spaces in Philadelphia.

Working in partnership with neighborhood residents, community organizations and city agencies, the program uses greening as a community building tool. It educates and empowers people to make the city a more attractive and livable place through horticulture.