Falling apart houses, patches of unused land, and generally neglected residential spaces can be found throughout American cities. These urban blights not only look ugly but cause societal problems as well since it’s a neglected space that nefarious activities can easily take place. Cities have found success in converting vacant lots into community garden spaces to address these concerns; however, in some cities there are too many vacant lots and not enough demand for more gardening space. Philadelphia found that just greening vacant lots by planting some sod and trees they’ve been able to improve neighbourhoods and help the city in other ways like local temperature cooling and water management.
The PHS LandCare program recognizes that while vacant lots in legacy cities greatly outnumber the organizations or individuals willing or able to turn them into gardens, vineyards, or parks, allowing those lots to remain derelict condemns their surroundings to continued blight. To address this, PHS developed an inexpensive, low-maintenance approach to vacant lots that involves only basic sodding, tree planting, and erection of simple split-rail fencing on the lot. Today, PHS, with support from the city of Philadelphia, has installed and maintains LandCare treatments on more than 7,000 vacant lots across the city.
Facing this problem, cities realized that their vacant land inventories offered an alternative. Instead of using the traditional method of channeling stormwater runoff into the sewers, the water could be channeled toward green spaces, where it could gradually filter through the ground and refill the aquifers under the city. Such a strategy would be far better environmentally and would also reduce the need for massive holding tanks and allow cities to comply with EPA requirements at lower cost. Philadelphia was the first city in the United States to turn the idea into a reality by developing a detailed plan and a 25-year implementation strategy, which was approved by the EPA in 2012.