PHILADELPHIA, Nov. 19 (UPI) -- Planting grass and trees to create a park-like setting in vacant city lots reduced gun assaults and vandalism in Philadelphia, researchers found.
Senior author Charles C. Branas of the Perelman School of Medicine, University of Pennsylvania, said in 1999 Pennsylvania Horticultural Society began a program to landscape vacant lots by removing trash and debris, grading the land, and planting grass and trees to create a park-like setting. They also installed low wooden post-and-rail fences around each lot to show it was cared for and to deter illegal dumping.