What is a Stonecrop plant?

  Stonecrop is a common name for perennial herbs of the genus Sedum, belonging to the family Crassulaceae. The genus is native to temperate and cold regions of the North­ern Hemisphere, and contains many species cultivated for rock gardens and flower-bed borders. Two European species grown extensively in U.S. gardens are the mossy stonecrop, Sedum acre, a low, creeping evergreen with golden flowers, and the live-forever, or garden orpine, Sedum telephium, an erect perennial with cream-colored blossoms. Both plants spread from cultivation and are widely naturalized in North America.