Introduction

Gulmohar (Delonix regia) is one of the most spectacular flowering trees in the world, admired for its brilliant scarlet-red to orange-red flowers and wide, umbrella-shaped canopy. Native to Madagascar, it is now widely cultivated throughout tropical and subtropical regions as a shade and ornamental tree.

During the flowering season, Gulmohar produces thousands of vibrant blossoms that almost completely cover the tree, creating a breathtaking display. It is commonly planted in parks, avenues, schools, campuses, gardens, and roadside landscapes.

Physical Characteristics

Height

• Typically grows 30–40 feet (9–12 meters) tall.
• Under ideal conditions, it can reach 50 feet (15 meters).

Spread

• Crown spreads 40–60 feet (12–18 meters) wide.
• Forms a broad, umbrella-shaped canopy.

Trunk

• Short, thick trunk with rough gray-brown bark.
• Develops strong, spreading branches.

Leaves

• Soft, feathery, bipinnate leaves.
• Bright green in color.
• Each leaf measures 12–24 inches (30–60 cm) long.
• The tree sheds its leaves during the dry season in many regions.

Flowers

• Large, showy flowers with five petals.
• Bright scarlet-red, orange-red, or crimson.
• One petal often has white or yellow markings.
• Blooms mainly during late spring and summer.

Fruits

• Long, flat, woody seed pods.
• Pods measure 12–24 inches (30–60 cm) long.
• Dark brown when mature and contain numerous seeds.

Propagation

Gulmohar is propagated mainly by:

1. Seeds

• Most common method.
• Scarify or soak seeds in warm water for 24 hours before sowing.
• Germination usually occurs within 1–3 weeks.

2. Stem Cuttings

• Used occasionally for selected ornamental varieties.

Landscape & Decorative Uses

Gulmohar is ideal for:

• Avenue plantations
• Parks
• School and college campuses
• Gardens
• Hotels and resorts
• Farmhouses
• Public landscapes
• Roadside planting
• Large residential gardens
• Shade tree planting

Common Problems

Root Rot

Occurs due to poor drainage or excessive watering.

Aphids

May attack young shoots and flower buds.

Scale Insects

Can infest branches and leaves.

Caterpillars

Sometimes feed on leaves.

Powdery Mildew

May develop during humid weather.

Maintenance Tips

• Plant in a sunny, open location.
• Water regularly during the first few years.
• Prune lightly to remove dead or damaged branches.
• Fertilize before the flowering season.
• Provide enough space for the wide canopy.
• Ensure proper drainage.
• Inspect periodically for pests.

Lifespan

With proper care, Gulmohar trees can live for 50–70 years or more, producing spectacular flowers every year.

Interesting Facts

• Gulmohar is often called the "Flame Tree" because of its brilliant fiery-red flowers.
• The tree's broad canopy provides excellent natural shade in hot climates.
• It is one of the most popular avenue trees in tropical countries.
• The scientific name Delonix regia means "royal claw", referring to its elegant flowers.
• The long seed pods are often used in decorative crafts and educational projects.