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Zone
Zones 23, 24, H1, H2
Full Sun
Full
Regular Water
Moderate
Toxicity
All parts are poisonous if ingested

Allamanda

Apocynaceae
Evergreen, Shrubs, Vines

These handsome plants from tropical South and Central America tolerate very little frost and require considerable heat for proper growth and bloom; warm nights as well as warm days seem necessary. Trumpet-shaped flowers (borne nearly year-round) and foliage are both imposing. Permanent outdoor plants only in the mildest climates. Elsewhere, grow as summer-blooming potted plants; keep indoors during cold weather.

Allamanda blanchetii 'Cherries Jubilee', photo courtesy of Bob Wigand
Allamanda blanchetii 'Cherries Jubilee', photo courtesy of Bob Wigand

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Allamanda blanchetii

Shrubby grower to 6–10 ft. tall and wide, often with a few vining stems. Leaves are somewhat downy. Rose-purple flowers are 3 1/2 in. across. ‘Cherries Jubilee’ (A. ‘Cherries Jubilee’) has brilliant burgundy red blooms.

Allamanda cathartica
Allamanda cathartica

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Allamanda cathartica

Can grow to great heights (over 50 ft.) as a vine; it can clamber through trees but must be tied to other supports. Often pinched back to grow as a large freestanding shrub. Leaves are glossy, leathery, 4–6 in. long. Yellow trumpets are 5 in. wide, 3 in. long.

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