Allamanda cathartica
Allamanda cathartica, commonly called golden trumpet, common trumpetvine, and yellow allamanda, is a species of flowering plant of the genus "Allamanda" in the family Apocynaceae. It is native to Brazil. This plant is cited in "Flora Brasiliensis" by Carl Friedrich Philipp von Martius. It does not twine, nor does it have tendrils or aerial roots. It can be pruned into a shrub form. If not pruned it can sprawl to a height of 20 feet. The city of Canóvanas, Puerto Rico has adopted this species, known locally as "canario amarillo", as its official flower. Cultivation. The species is  cultivated as a house plant. It requires a soil rich in organic matter, temperatures of not less than during the growing season, plenty of moisture, and bright light but not direct sunlight. During the rest season from October to March, the plant should be watered more sparingly and can endure temperatures down to . It should be repotted every year until it is in a container of . Propagation is by cuttings taken from April to May.