Alphabetical Plant Listing

Allamanda blanchetii (Purple Allamanda)

Cherry Allamanda, Purple Allamanda, Violet Allamanda, Allamanda violacea


Vigorous and fast-growing, Allamanda blanchetii (Purple Allamanda) is an evergreen tropical shrubby climber boasting ravishing rose-purple trumpet flowers, 3-4 in. across (7-10 cm) over a long season. Blooming in succession for months in summer and fall - all year in tropical conditions, each flower features 5 partially overlapping, rounded lobes, of pink to reddish purple color, more intense in the throat. Opening from burgundy-brown buds, they stand out against the handsome foliage of glossy, bright green, downy leaves, 3-5 in. long (7-12 cm), held in whorls of four. Grown as a vine or pruned into a bushy shrub, Allamanda blooms on new growth. It does not tolerate cold and needs heat for adequate growth and flowering. Providing quick, long-season color, Allamanda can be planted outdoors in the mildest climates. Elsewhere, it will happily reside in a container to be moved indoors in cold weather. This tropical plant needs average to warm temperatures 65-80°F (18-27°C). It will tolerate a minimum of 59°F (15°C) in winter and can stand drops of temperature up to some degree over 32°F (0°C) only if exceptional and for a very short period.

  • Grows up to 6-10 ft. tall and wide (180-300 cm).
  • A full sun or light shade lover, it is best grown in richly organic, fertile, moist, well-drained soils. Does not tolerate drought or wet soils. Allamanda appreciates heat on its vines, but its roots benefit from a cooler environment.
  • Water and fertilize regularly during the growing season. Keep organic mulch around the base of a plant and fertilize twice each month.
  • Perfect for arbors, trellises or containers.
  • Generally pest and disease free. Allamanda drops its leaves when it suffers water stress. Yellowing between leaf veins, or chlorosis, indicates a need for more organic matter in the soil.
  • Remove seedpods to keep new growth and flowers coming. Prune in late winter, early spring to encourage a more compact habit and a copious blooming.
  • Propagation by cuttings, air-layers, and seeds. Seeds germinate in 3 – 6 weeks.
  • All the parts of the plant are toxic and the latex can cause dermatitises and allergic reactions to particularly sensible persons.
  • Native to Brazil.

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Requirements

Hardiness 9 – 11
Climate Zones 23, 24, H1, H2
Plant Type Climbers, Shrubs
Exposure Full Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Winter
Height 6' – 10' (180cm – 3m)
Spread 6' – 10' (180cm – 3m)
Water Needs Average
Maintenance Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy, Evergreen
Garden Uses Arbors, Pergolas, Trellises, Patio and Containers

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While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 9 – 11
Climate Zones 23, 24, H1, H2
Plant Type Climbers, Shrubs
Exposure Full Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Winter
Height 6' – 10' (180cm – 3m)
Spread 6' – 10' (180cm – 3m)
Water Needs Average
Maintenance Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy, Evergreen
Garden Uses Arbors, Pergolas, Trellises, Patio and Containers

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