Plumeria hybrid cultivars are named by their breeders or hybridizers following the guidelines for cultivar naming. Hybrid cultivar names often reflect the parentage of the hybrid or highlight its unique features resulting from the cross. For example, a hybrid resulting from a cross between Plumeria rubra and Plumeria obtusa may be named “Rubusta Hybrid.” As with other cultivars, hybrid names should be unique and not previously used for other registered Plumeria cultivars. Proper naming ensures that hybrid cultivars are accurately identified and distinguished within the horticultural community.