Image: AI generated
Golden Trumpet Plant Care
Allamanda cathartica Schrad.
Updated · Sources · How we source care data
This plant is recognized by its glossy, lance-shaped leaves and vibrant yellow trumpet-shaped flowers that originate from South America. Plant collectors are drawn to the Allamanda cathartica for its stunning blooms and ability to attract butterflies, making it a colorful addition to any garden.
Every 7–10 days
Full sun to partial shade
65–85°F
50–70%
At a glance
How do you care for Golden Trumpet?
Water Golden Trumpet every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 65–85°F (18–29°C) and 50–70% humidity. Fertilize it every 4 months during the growing season. It is reported as toxic to pets, so keep it out of reach of pets.
Where Is the Golden Trumpet Native To?
What Is the Golden Trumpet?
Golden Trumpet (Allamanda cathartica) belongs to the Apocynaceae family within the Allamanda genus. Golden Trumpet is native to Bolivia, Brazil, French Guiana, Guyana, Suriname, and Venezuela, and widely naturalised else. Golden Trumpet is also known as Yellow Allamanda, Common Allamanda, Buttercup Flower.
Golden Trumpet displays a vining, climbing shrub growth habit, reaching up to 6 ft tall with a spread of approximately 3 ft. Golden Trumpet produces large, trumpet-shaped flowers in shades of yellow, orange, or pink.
Leaf size: approximately 6 inches.
How Often Should You Water a Golden Trumpet?
Allamanda cathartica requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Golden Trumpet Need?
Golden Trumpet thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Golden Trumpet Prefer?
Allamanda cathartica grows best at temperatures of 65–85°F. Golden Trumpet prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–85°F
Humidity
50–70%
What Soil Mix Works Best for a Golden Trumpet?
Well-draining, fertile soil with added perlite for extra drainage. Good drainage is essential for Golden Trumpet to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Golden Trumpet?
Feed Golden Trumpet every 4 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 4 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Golden Trumpet?
Repot annually in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Golden Trumpet?
Golden Trumpet can be propagated through stem cuttings, air layering. Similar propagation techniques also apply to yellow allamanda plant care, which shares the same genus.
Is the Golden Trumpet Toxic to Pets and Children?
Toxic (caution)
Reported as toxic in our plant data. Not verified by the ASPCA.
Toxic to humans and pets if ingested
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Golden Trumpet?
Golden Trumpet is susceptible to aphids, spider mites, whiteflies. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Golden Trumpet Need?
Golden Trumpet grows outdoors in USDA Zone 9b – 11b. It survives winters down to planting zone 9b. Golden Trumpet is native to Bolivia, Brazil, French Guiana, Guyana, Suriname, and Venezuela, and widely naturalised else. In cooler regions, grow Golden Trumpet as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 9b – 11b
Keep exploring plants
Golden Trumpet is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Allamanda genus — compare its care with other Allamanda species on PlantoScan.
Allamanda is part of the Apocynaceae plant family — browse all Apocynaceae genera and species.
Golden Trumpet thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Allamanda cathartica Schrad., family Apocynaceae (first published in Gött. Gel. Anz. 1: 707 (1821)) — World Flora Online record, IPNI name record.
- Pet toxicity: Golden Trumpet is reported as toxic to pets in our plant data (not verified by the ASPCA), so treat it with caution. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: AI-generated illustration (labelled on the image).
- Hardiness zone: USDA Zone 9b – 11b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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