Over 2000 species mainly from Africa, Madagascar. Ranging from low-growing succulents to woody shrubs to trees. They have a milky white sap which is poisonous, (that effect the eyes and skin) should be handled with care.
Mostly summer growers and require regular watering during the warmer months. Keep them mostly dry in winter, Sun to partial sun to keep their shape. Well drained soil and good ventilation is required.