Photo credits: Kevin Conger (top left), Nancy Conger (top right), Tom Fox (bottom)

The Crack Garden is an award-winning project by CMG Landscape Architecture in San Francisco, California. The project transforms a desolate concrete landscape into a lush garden:

Inspired by the tenacious plants that pioneer the tiny cracks of urban landscapes, a backyard is transformed through hostile takeover of an existing concrete slab by imposing a series of "cracks". The rows of this garden contain a lushly planted mix of herbs, vegetables, flowers, and rogue weeds retained for their aesthetic value.

Link - via Pruned