Bougainvilleas are popular ornamental plants in most areas with warm climates, including the Philippines, Thailand, Pakistan, India, Taiwan, Vietnam, Malaysia, Australia, Singapore, the Mediterranean region, the Caribbean, Mexico, South Africa, Kuwait,and the United States in Arizona, California, Florida, Hawaii, Louisiana, and southern Texas.
Numerous cultivars and hybrids have been selected, including nearly thornless shrubs. Some Bougainvillea cultivars are sterile, and are propagated from cuttings.
Bougainvillea are rapid growing and flower all year in warm climates, especially when pinched or pruned. They grow best in moist fertile soil. Bloom cycles are typically four to six weeks. Bougainvillea grow best in very bright full sun and with frequent fertilization, but the plant requires little water to flower. As indoor houseplants in temperate regions, they can be kept small by bonsai techniques. If overwatered, Bougainvillea will not flower and may lose leaves or wilt, or even die from root decay.