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PlantSnap
Plant Care
Smooth allamanda
(Allamanda laevis)
Also Known As
Smooth allamanda, Golden trumpet, Butterfly bush
About This Plant
Allamanda laevis is a tropical flowering plant that produces large, showy, yellow trumpet-shaped flowers. It is a fast-growing vine that can reach up to 20 feet (6 meters) in length. The plant has glossy, dark green leaves that are arranged in whorls of four or five.
Plant Care Instructions
Outdoor Size Range
Up to 20 feet (6 meters)
Light Requirements
Allamanda laevis requires full sun to partial shade. It should be placed in a location that receives at least six hours of direct sunlight per day.
Humidity Needs
Allamanda laevis prefers moderate to high humidity levels. It can benefit from regular misting or placement on a pebble tray filled with water.
Fertilizing Schedule
Feed Allamanda laevis every two weeks during the growing season with a balanced fertilizer. Reduce fertilization during the winter months.
Pruning Guidelines
Prune the plant after flowering to maintain its shape and size. Remove any dead or diseased growth throughout the year.
Common Pests and Diseases
Common pests for Allamanda laevis include spider mites, mealybugs, and scale insects. Diseases such as leaf spot and root rot can also occur.
Indoor Size Range
4-6 feet (121-182 cm)
Watering Schedule
The plant prefers consistently moist soil, but it should not be overwatered. Water the plant when the top inch of soil feels dry to the touch.
Temperature Range
The plant prefers warm temperatures between 60-85°F (16-29°C). It should be protected from cold drafts and temperatures below 50°F (10°C).
Growing Season
Allamanda laevis can be grown year-round in tropical climates. In cooler climates, it should be grown as a houseplant or overwintered indoors.
Growing Difficulty Level
Allamanda laevis is considered moderately difficult to grow. It requires specific light, temperature, and humidity conditions and can be susceptible to pests and diseases.
USDA Hardiness Zones
Allamanda laevis is hardy in USDA zones 10-11.
Did You Know?
In traditional medicine, the sap of the Allamanda laevis plant has been used to treat skin conditions and as a laxative.
