Delonix decaryii

Delonix decaryii is a rare, deciduous tree from the Fabaceae family, native to Madagascar. Unlike its famous relative Delonix regia (Royal Poinciana), this species is prized for its thick, swollen trunk (caudex-like), feathery foliage, and drought resistance. With its unique form and resilience, Delonix decaryii is an excellent choice for dry landscapes, xeriscaping, and bonsai cultivation.

Key Features:

Botanical Name: Delonix decaryii
Common Names: Madagascan Bottle Tree, Decary’s Delonix
Family: Fabaceae (Legume family)
Native Region: Madagascar
Growth Rate: Moderate
Mature Size: 5–12 meters (16–40 feet) tall
Trunk: Swollen at the base, allowing water storage, making it resemble a bottle tree
Leaves: Feathery, bipinnate, bright green, similar to Delonix regia
Flowers: Small, pale yellow to cream-colored, less showy than Delonix regia
Fruits: Large, woody, elongated seed pods
Season: Deciduous, shedding leaves in dry seasons

Growing Conditions:

Sun Exposure: Full sun
Soil Requirements: Well-draining, sandy, or rocky soil
Watering Needs: Low; drought-tolerant, requiring minimal watering
Temperature Tolerance: Prefers warm, arid to subtropical climates; not frost-hardy
Humidity: Prefers low to moderate humidity