Sedum, a genus of about 600 species of succulent plants, mostly perennial. The sedums are found in the temperate region of the Northern Hemisphere. They store water in their thick, fleshy leaves. Sedums grow well in full sunlight and sandy soil. They are mostly cultivated in rock gardens and as border plants. Most species are low and creeping; some, however, grow upright. The flowers, borne in terminal clusters on the stem, may be white, yellow, blue, pink, or red.

Two of the most commonly cultivated species are the wall pepper, or goldmoss stonecrop, and the live-forever, or orpine. The wall pepper is a creeping plant up to five inches (13 cm) tall. It has small, triangular leaves and bright yellow flowers. The live-forever is an upright plant that grows to about 18 inches (45 cm). It has oval leaves with toothed edges and reddish-purple flowers.

The genus Sedum belongs to the orpine family, Crassulaceae. The wall pepper is S. acre; the live-forever, S. telephium.