How to Grow and Care for Allamanda

Golden trumpet (Allamanda cathartica) is a plant species native to Brazil. Golden trumpet is mentioned in Flora Brasiliensis. It is the official flower of Canovanas, Puerto Rico. If this plant is not pruned, it can grow to a height of 6 m.

Purple allamanda (Allamanda blanchetii) is a tropical evergreen that is native to Brazil and is cultivated as an ornamental plant in the southern United States and other appropriately mild climates. In the right conditions, purple allamanda blooms all year long, producing brilliant rose-purple, trumpet-shaped flowers. It is a climbing plant and may be grown as a vine or pruned into a bush.

Bush allamanda (Allamanda schottii) is a tropical evergreen shrub that thrives in full sun and prefers warm, humid climates. A prolific bloomer, it produces trumpet-shaped yellow blossoms from summer until the first frost. Remove old blooms to encourage new flowers; otherwise it will begin to produce seed.

Golden trumpet 'Hendersonii' is a cultivar of Golden trumpet. It is distinguished by the size and color of the flowers; they are smaller with white and orange coloration in the center and brown buds, though the flower itself is still yellow like other varieties. The variety is one of many across different species named for Louis Henderson.