and South America as far south as Brazil but have been spread throughout the world's tropics.
Plumeria is related to the Oleander, Nerium oleander, and both possess a irritating, milky sap, rather similar to that of Euphorbia. Contact with the sap may irritate eyes and skin. Each of the separate species of Plumeria bears differently shaped alternate leaves, with distinct form and growth habits. The leaves of P. alba are quite narrow and corrugated, whereas leaves of P. pudica have an elongated shape and glossy, dark-green color. P. pudica is one of the everblooming types with non-deciduous, evergreen leaves. Another species that retains leaves and flowers in winter is P. obtusa; though its common name is "Singapore," it is originally from Colombia.
Plumeria flowers are most fragrant at night in order to lure sphinx moths to pollinate them. The flowers have no nectar, and simply dupe their pollinators. The moths inadvertently pollinate them by transferring pollen from flower to flower in their fruitless search for nectar.
Plumeria species may be easily propagated from cuttings of leafless stem tips in spring. Cuttings are allowed to dry at the base before planting in well-drained soil. Cuttings are particularly susceptible to rot in moist soil. Propagation can also be by tissue culture from cuttings of freshly elongated stems or aseptically germinated seed. Pruning is best accomplished in the winter for deciduous varieties, or when cuttings are desired.