Caesalpinia pulcherrima – This variable species is commonly known as the Pride of Barbados, Peacock Flower, or, inaccurately, Dwarf Poinciana. It has become widespread in the tropics, but its origin was probably the West Indies and northern South America. It flowers prolifically, and the more common hues of its 2-in. blooms are orange-red, yellow, white and pink.
The ultimate appearance of this species depends on the attention given to it. If the owner does judicious pruning, C. pulcherrima can be groomed into a tree reaching around 20 ft. tall. If the owner has a more laissez faire approach, the plant will become a fairly sprawling shrub to about 10-12 ft. For best flowering, the Pride of Barbados should be planted in full sun, though it can handle some shade. It is not particular about soil. Because of its spines, the plant should be located on sites not close to foot traffic. Despite the tropical origin of C. pulcherrima, it can be grown even in some places where it freezes to the ground in the winter, because roots are said to be able to survive 15° nights and regenerate in the spring.
Richard Lyons Nursery has this shrub in pink, yellow, and the most common, orange.