Succulent plants have become so popular because they offer low maintenance and diverse shapes and textures, both in the garden and indoors. Crassula is a diverse and extensive genus of succulent plants with about 350 species. Most well-known is the jade plant (Crassula ovata). It is known as a houseplant, but in warm climates, it grows into a shrub. Crassulas range from annuals to perennials, herbaceous or woody plants, groundcovers to shrubs to small trees. They are perfect container plants that arelow maintenance, evergreen, and eye-catching.