|This genus consists of over 290 species of perennial succulents that are smooth and fleshy, many of which resemble stones with a crack down the middle. Native to desert and semi-arid regions of Namibia and South Africa, these perennial succulents have long roots that aid in collecting water. Flowers are single and daisy like. Grow in a cactus mix or sand and water sparingly from late summer to early winter. Do NOT water from late spring to mid summer. Full sun.