Crassula

Crassula is a genus of succulent plants in the family Crassulaceae, comprising more than 200 species. The name derives from Latin crassulus, meaning thick or fleshy, a reference to the plants' succulent leaves. The genus is native to various regions, with a strong center of diversity in southern Africa and nearby islands; many species are cultivated worldwide as ornamentals.

Crassula plants are characterized by opposite, fleshy leaves arranged in rosettes or along stems; forms range from compact shrubs to trailing and cushion-like mats. Flowers are small, five-petaled and often yellow, pink, or white, produced in clusters on short inflorescences.

Cultivation: They prefer bright light, well-draining soil, and infrequent watering; drought-tolerant and susceptible to root rot if kept in wet soil. They tolerate indoor conditions well and can be propagated by leaf or stem cuttings, which readily root.

Common species include Crassula ovata (jade plant), Crassula arborescens, Crassula tetragona (mini pine tree), Crassula perforata (string of buttons), Crassula capitella, Crassula muscosa (watch chain). Many hybrids and cultivars are grown as houseplants; some species form attractive landscapes in suitable climates.