Crassula contains some 300 species of succulent annual, biennial, and perennial herbs and small shrubs. A great number of them are spreading perennials or bushy woody-stemmed shrubs. The type genus for the stonecrop (Crassulaceae) family, the species occur naturally in Asia, Europe, Madagascar, and Australia, but most are native to southern Africa. These plants are usually grown as ornamentals, and their easy maintenance makes many species suitable for rock gardens, while others make attractive groundcover plants. The genus name comes from the Latin crassus, meaning thick which is a reference to the thickened leaves.

Porous soil with adequate drainage. Bright, filtered light and ample airflow. Water thoroughly when soil is dry to the touch.