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Golden Trumpet

Allamanda cathartica

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Golden Trumpet (Allamanda cathartica) at Homestead Gardens

Golden Trumpet flowers

Golden Trumpet flowers

(Photo courtesy of NetPS Plant Finder)

Height:  20 feet

Spread:  24 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  (annual)

Other Names:  Yellow Allamanda, Yellow Bell, Buttercup Flower

Description:

This attractive vine produces volumes of fragrant yellow trumpet flowers nearly all year long; does not twine and requires a trellis or fence for support; perfect for cascading over walls; can also be maintained as a low cover

Ornamental Features

Golden Trumpet features showy clusters of fragrant yellow trumpet-shaped flowers with gold throats along the branches from early spring to late fall. Its attractive glossy pointy leaves remain dark green in color throughout the year. The fruit is not ornamentally significant.

Landscape Attributes

Golden Trumpet is a multi-stemmed annual with a ground-hugging habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This is a relatively low maintenance plant, and may require the occasional pruning to look its best. It is a good choice for attracting bees and butterflies to your yard. It has no significant negative characteristics.

Golden Trumpet is recommended for the following landscape applications;

  • Accent
  • Hedges/Screening
  • General Garden Use
  • Container Planting

Planting & Growing

Golden Trumpet will grow to be about 20 feet tall at maturity, with a spread of 24 inches. As a climbing vine, it should either be planted near a fence, trellis or other landscape structure where it can be trained to grow upwards on it, or allowed to trail off a retaining wall or slope. Although it's not a true annual, this plant can be expected to behave as an annual in our climate if left outdoors over the winter, usually needing replacement the following year. As such, gardeners should take into consideration that it will perform differently than it would in its native habitat.

This plant does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This species is not originally from North America.

Golden Trumpet is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. Because of its spreading habit of growth, it is ideally suited for use as a 'spiller' in the 'spiller-thriller-filler' container combination; plant it near the edges where it can spill gracefully over the pot. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Accent  Screening  Garden  Container 
Applications
Flowers  Foliage Color  Attracts Wildlife 
Ornamental Features