Sedum reflexum aka-Petrodeum rupestre - Perennial hardy succulent with a prostrate spreading habit to about 10 cms height. Native to parts of Europe, where it is harvested as an edible plant, used both raw or cooked. Best eaten in small quantities, can upset stomach if you eat too much. A good ornamental, low maintenance, groundcover in well drained soil. Full sun to part shade. Frost hardy. Covered in pretty yellow flowers throughout summer.