Allamanda cathartica

Golden Trumpet

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Evergreen climbing shrub featuring glossy dark green leaves and large bright yellow trumpet-shaped flowers. Native to Brazil, known for vibrant blooms but contains toxic latex sap.
yard Outdoor plants wb_sunny Half-shade / Sun pets Not pet-safe
info Pot sizes shown are estimations. Real dimensions may vary depending on the merchant.
Merchant Pot Size Availability Price
Amazon.com - In Stock $42.00 Buy
info

Plant Details

Common Name Golden Trumpet
Family Apocynaceae
Genus Allamanda
Species Cathartica
Origin Brazil
Blooming Spring to Autumn, requires high light for continuous flowering
Leaf Color Dark green glossy
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Rich, well-draining loamy soil with high organic content and slight acidity (pH 6.0-7.5)

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Watering

Keep consistently moist during active growth; allow topsoil to dry slightly between waterings in winter

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Sunlight & Care

Prefers full sun for optimal flowering; tolerates partial shade but may reduce bloom production

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Fertilization

Apply balanced liquid fertilizer monthly during growing season (April-September) to support blooming

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Pruning

Prune after flowering cycle to maintain shape and encourage bushiness; wear gloves due to irritating sap

Pest Control Aphid Mealybug Scale Spider Mite

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 6 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
50° – 95°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 80%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
3000 – 35000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1200 – 2800
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
25% – 70%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)
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Common Problems

Something wrong with your Allamanda cathartica? Select a symptom to diagnose and fix the issue.

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