Euphorbia is a very large, extremely diverse genus of over 2000 flowering plants. Widely distributed over a range of habitats and climatic zones around the globe, leaves are also variable in shape and form, often being short-lived on succulent species. Also known as Milkweed or Spurge, most Euphorbias have small flowers held within cupped, often colourful bracts. These are acid yellow/lime green in many garden favourites and can be found in rock gardens, mixed borders, woodland gardens or used as groundcover. Succulent species however, are more suitable for a dry, tropical location or temperate greenhouse. Euphorbias prefer a well-drained soil in a sunny position but will tolerate moist soils and partially shaded conditions. They readily self-seed, so remove flowers before they set seed, to limit spread. Some euphorbias, such as Poinsettias, are grown commercially, while many others are sold as ornamentals for their attractive and unique flowers, and striking foliage.