Allamanda Double Flower. Blooming in succession for months throughout the summer to the first frost - all year in tropical conditions the fragrant blossoms may be single or double. Allamanda flowers primarily in the summer and fall.
There can be one to several flowers in each cluster. Allamanda violacea Cherry Jubilee. Blooming in succession for months throughout the summer to the first frost - all year in tropical conditions the fragrant blossoms may be single or double.
Flowering season - Year round.
Allamanda cathartica Stansills Double flower. A woody and evergreen vine. Allamanda cathartica williamsii is a member of the Apocynaceae family and is native to Tropical America. Flowers - Large showy trumpet shaped bright yellow double blossom 3 inches wide single or clustered mild fragrance.