Allamanda cathartica
Allamanda cathartica L.
Allamanda cathartica is a vigorous tropical evergreen vine or sprawling shrub from Central and South America, celebrated for its enormous, intensely golden-yellow trumpet-shaped flowers that bloom almost continuously in warm climates. It symbolizes radiance, optimism, new opportunities, and the joyful exuberance of the tropics.
Apocynaceae (Dogbane family)
Year-round in tropical climates; summer to autumn in subtropical and greenhouse conditions
Symbolism & Meanings
Key Meanings
Perfect For
Color Meanings
Similar flowers: hibbertia scandenss and royal poinciana flowers also share similar meanings.
Cultural Significance
In many tropical countries where Allamanda cathartica grows freely along roadsides and in gardens, its brilliant golden flowers have made it a symbol of sunshine, happiness, and the generous abundance of the tropics. It is the national flower of Suriname and features prominently in the visual culture of several Caribbean and Southeast Asian nations. The genus was named in honor of the Swiss botanist Frederic Louis Allamand, who collected specimens in Suriname in the 18th century. The species name cathartica reflects the plant's traditional use as a purgative, a reminder that even the most beautiful flowers can carry a warning. In the language of flowers in tropical traditions, golden trumpet is associated with grand gestures, optimistic energy, and the brightness of possibility.Shop Our Floral Collection
Transform your space with our curated selection of designer floral throw pillows
Visit Full StoreBotanical Information
Physical Characteristics
Natural Habitat
Growing Guide
Sunlight
Full sun for best flowering; tolerates partial shade but blooms less freely
Water
Ample and consistent moisture during active growth; reduce watering in winter; do not allow to dry out completely; good drainage essential
Soil
Fertile, Moist but well-drained, Humus-rich, Slightly acidic to neutral, pH 5.5–7.0
Expert Growing Tips
Provide a sturdy trellis or support; tie stems in as the plant does not self-cling
Prune back hard in late winter or early spring to promote bushy growth and abundant new flowering shoots
Feed every 2 to 3 weeks with a high-potassium liquid fertilizer during active growth
All parts of the plant are toxic if ingested and the sap can cause skin and eye irritation; wear gloves when handling
In temperate climates, overwinter in a frost-free greenhouse at minimum 13 degrees C (55 degrees F)
Uses & Benefits
Ornamental Uses
- Pergola, trellis, and fence climber in tropical gardens
- Specimen shrub when hard-pruned in warm climates
- Greenhouse or conservatory climber in temperate regions
- Large container plant brought outdoors for summer display
- Tropical-style mixed border backdrop
Traditional Uses
- In traditional South American folk medicine, the roots and leaves have been used as a purgative and laxative, which the species name cathartica directly references
- Research has identified allamandin and related compounds with potential antitumor activity; these are not approved medical treatments
- All traditional medicinal uses carry significant toxicity risk; the plant must never be used for self-treatment
Disclaimer: Information provided is for educational purposes only. Consult healthcare professionals before using any plant medicinally.
Further Reading
Frequently Asked Questions about the Allamanda cathartica
What does Allamanda cathartica symbolize?
Golden trumpet symbolizes radiance, optimism, and joyful abundance. Its intense golden-yellow flowers represent solar energy, vibrant enthusiasm, and the exuberant spirit of the tropics. In Suriname, where it is the national flower, it stands for national pride and tropical beauty.
Is Allamanda cathartica toxic?
Yes, all parts of the plant are toxic if ingested and the milky sap can cause skin and eye irritation. Wear gloves when pruning or handling the plant, and keep it away from children and pets. The species name cathartica refers directly to its powerful purgative properties.
How do you grow Allamanda cathartica outdoors?
It thrives in full sun in fertile, moist but well-drained soil in frost-free climates (USDA zone 10 and above). Provide a sturdy trellis for support, water generously, and feed every 2 to 3 weeks with a high-potassium fertilizer during the growing season. Prune hard in late winter to encourage vigorous flowering growth.
Can Allamanda cathartica grow indoors?
Yes, it can be grown in a large conservatory or greenhouse in full light with a minimum winter temperature of 13 degrees C. Reduce watering in winter while keeping the plant barely moist, then resume feeding and watering in spring as new growth begins.
Why is Allamanda cathartica called the national flower of Suriname?
Allamanda cathartica grows abundantly throughout Suriname and its brilliant golden-yellow flowers are a powerful emblem of tropical sunshine, natural beauty, and national pride. The plant also has historical significance as specimens from Suriname were among the earliest collected by European botanists, including the botanist after whom the genus was named.
Available Colors
Quick Facts
Share This Flower
Explore More Beautiful Flowers
Discover other flowers with similar meanings, characteristics, or cultural significance.
Hibbertia Scandens
Hibbertia scandens (Willd.) Dryand.
Hibbertia scandens, the snake vine or climbing guinea flower, is a vigorous and adaptable Australian native climber bearing large, golden-yellow flowers with more than thirty stamens over a long spring to summer season. Hardy, salt-tolerant, and spectacularly floriferous, it holds the Royal Horticultural Society's Award of Garden Merit.
Royal Poinciana Flower
Delonix regia (Bojer ex Hook.) Raf.
Royal poinciana produces breathtaking clusters of scarlet-orange flowers with delicate fern-like foliage, creating one of nature's most spectacular floral displays. Native to Madagascar, these magnificent blooms symbolize royalty, tropical majesty, and the vibrant beauty of summer.
Cochlospermum Vitifolium
Cochlospermum vitifolium (Willd.) Spreng.
Cochlospermum vitifolium, the Buttercup Tree, is a striking deciduous tropical tree from Central America that erupts in large golden-yellow flowers on completely bare branches during the dry season. It symbolizes resilience, renewal, and the triumph of life over adversity.