Allamanda Flower Plant Description

Allamanda is a genus of flowering plants in the Apocynaceae family, known for its bright, trumpet-shaped flowers and vigorous growth. Often referred to as Golden Trumpet, Allamanda is a tropical plant that adds a vibrant splash of color to gardens and landscapes.

🌿 General Characteristics:
Scientific Name: Allamanda spp.

Common Names: Allamanda, Golden Trumpet, Yellow Bell, Buttercup Flower

Plant Type: Evergreen shrub, vine, or climber (depending on the species and pruning)

Height: Typically 4–10 feet (1.2–3 meters); can grow taller when supported as a vine

🌸 Flowers:
Shape: Large, funnel- or trumpet-shaped flowers with five petals

Color: Most commonly bright yellow; some varieties also come in purple or pinkish shades

Size: 3–5 inches (7–13 cm) in diameter

Blooming Season: Spring through fall in tropical climates; nearly year-round in very warm regions

Fragrance: Mild to no fragrance

🌱 Leaves and Stems:
Leaves: Glossy, leathery, dark green, arranged in whorls or opposite pairs

Stem: Green and flexible when young, becoming woody with age; contains milky latex sap

🌞 Growing Conditions:
Light: Full sun (at least 6 hours daily) for best blooming

Soil: Well-drained, fertile soil with slightly acidic to neutral pH

Water: Regular watering during growing season; reduce in cooler months

Climate: Thrives in tropical and subtropical climates (USDA Zones 9–11); not frost-tolerant

🛠️ Care Tips:
Support: Climbing varieties benefit from trellises or fences

Pruning: Regular pruning helps maintain shape and encourages flowering

Pests/Diseases: May be affected by aphids, spider mites, and root rot if overwatered

⚠️ Toxicity:
All parts of the Allamanda plant are toxic if ingested due to the presence of alkaloids and latex-like sap.

Can cause skin irritation, so wear gloves when handling.

🌺 Popular Species:
Allamanda cathartica: The most common species, known as Golden Trumpet

Allamanda blanchetii: Features purplish or lavender flowers

Allamanda neriifolia: Compact variety suitable for containers

Let me know if you want a care guide, comparison with similar plants, or help identifying your specific Allamanda!