Sempervivums are available in many forms and colors, green through browns, yellow, orange, pink and red although they need to be grown in full sun to fully exhibit the different colors. Out of full sun many cultivars tend to end up as a similar green color. Leaves may be glossy or matt, in some cases with a waxy bloom or with downy hairs.
Sempervivums reproduce vegetatively by offsetting around the base of the rosette, often forming a dense cushion. Each offset will develop roots of its own and become independent of the parent plant as the connecting stolon withers. Some Sempervivums produce offsets on the end of long stolons and these root down at a distance from the parent plant, rather than producing a dense clump.