Advanced Search Filters

Plant Type
Hardiness Zone
Heat Zone
Sunset Zone
Function
Sun Exposure
Soil Moisture
Water Requirement

ALLAMANDA cathartica 'Grandiflora'

Image of Allamanda cathartica 'Grandiflora'

Gerald L. Klingaman

Family

Apocynaceae

Botanical Name

ALLAMANDA cathartica 'Grandiflora'

Plant Common Name

Yellow Allamanda

General Description

Yellow allamanda is a massive climbing evergreen shrub native to tropical South America. Its cultivar 'Grandiflora' has especially large, abundant, light yellow flowers. The fragrant, loosely clustered, trumpet-shaped blooms appear nearly year-round in tropical conditions. Spiny seed capsules follow the flowers. The coarse oval leaves are leathery and glossy. The long, scrambling stems will climb any structures available, or will grow as a freestanding shrub if their tips are regularly pruned. They are relatively compact compared to other forms of yellow allamanda.

This handsome climber requires full sun and fertile, well-drained soil for best growth. In temperate regions, yellow allamanda may be summered outdoors in containers and brought into a greenhouse or conservatory to overwinter. Whether grown as a vine or kept pruned back as a shrub, yellow allamanda makes a wonderful, everblooming specimen plant. It also makes an excellent hedge or screen where hardy.

Characteristics

  • AHS Heat Zone

    12 - 10

  • USDA Hardiness Zone

    10 - 15

  • Sunset Zone

    H1, H2, 23, 24

  • Plant Type

    Vine/Liana

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    25'-45' / 7.6m - 13.7m

  • Bloom Time

    Indeterminate

  • Native To

    South America

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam

  • Tolerances

    Salt

  • Growth Rate

    Fast

  • Water Requirements

    Drought Tolerant, Average Water

  • Habit

    Vining/Climbing

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Yellow, Gold

  • Fruit Color

    Green, Bronze, Brown

  • Foliage Color (Spring)

    Dark Green

  • Foliage Color (Summer)

    Dark Green

  • Foliage Color (Fall)

    Dark Green

  • Foliage Color (Winter)

    Dark Green

  • Bark Color

    Brown

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Glossy

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Bark Texture

    Smooth

  • Usage

    Container, Feature Plant, Hedges, Mixed Border, Screening / Wind Break, Tropical, Vine

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Birds

  • Self-Sowing

    No