How to Grow Coral Tree

Coral Tree

Erythrina lysistemon

tree

Erythrina lysistemon, commonly known as the Coral Tree or Cape Coral Tree, is a deciduous to semi-evergreen South African tree prized for its spectacular bright red-orange flowers that bloom in spring. The tree typically reaches 25-35 feet tall with an irregular, spreading canopy and distinctive thorny branches. It is a popular ornamental tree in warm climates and serves as an important food source for birds and pollinators.

Growing Conditions

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Sun: Full sun, 6-8 hours daily. Requires bright light for optimal flowering.

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Water: Moderate water needs. Water regularly during growing season (spring-summer), allowing soil to dry between waterings. Reduce watering significantly during dormant winter period. Drought-tolerant once established but flowers better with consistent moisture.

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Spacing: 240 inches

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Days to maturity: 1800-2400

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Planting depth: Plant transplants at same depth as container; seeds planted 0.5 inches deep

Soil

Type: Well-draining sandy or loamy soil

pH: 6.0-7.5

Amendments:

Compost or aged bark mulch for organic matter Perlite or coarse sand for improved drainage Bone meal at planting for phosphorus

Growing Zones

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Thrives in USDA zones 9b-11, with best performance in zones 10-11. Tolerates light frost but performs poorly in cold climates.

9b 10a 10b 11a 11b

Growth Stages

Seedling

3-4 weeks

Tiny green shoots emerge from soil with 2-3 cotyledon leaves, developing true leaves within 2-3 weeks.

Keep soil consistently moist but not waterlogged. Provide bright indirect light. Maintain warm temperatures (70-80°F). Thin weak seedlings.

Vegetative Growth

6-12 months

Young tree develops compound leaves and begins establishing root system and main trunk. Growth is rapid in warm season.

Water regularly during growing season. Stake if necessary for support. Begin light pruning to encourage branching. Apply balanced fertilizer monthly.

Maturation

2-4 years

Tree reaches mature height and canopy spread, developing characteristic thorny branches and stronger wood structure.

Prune selectively to shape canopy and remove dead wood. Reduce fertilizer frequency. Establish regular watering pattern without overwatering. Tree may not flower until 3-5 years old.

Flowering

4-8 weeks

Spectacular bright red-orange tubular flowers appear in clusters on branch tips, typically in spring (March-May in Northern Hemisphere).

Ensure adequate sunlight for maximum flower production. Do not over-fertilize with nitrogen, which reduces flowering. Maintain consistent moisture during flowering period.

Seed Production

8-12 weeks

Flowers fade and develop into long, flat, black seed pods containing hard brown seeds. Pods mature and dry.

Collect seed pods when dry for propagation or allow to fall naturally for self-seeding. Minimal care needed; reduce watering as tree enters dormancy.

Companion Planting

Plan your garden →

Plant with:

Desert rose (Adenium) Bougainvillea Lantana Salvia Fountain grass Agave Texas privet

Avoid planting near:

Shallow-rooted plants competing for water Frost-sensitive tender plants in marginal zones Lawns requiring frequent overhead irrigation

Common Pests

Spray with water to dislodge; use miticide if severe. Improve air circulation and avoid drought stress.
Prune affected branches; apply horticultural oil or neem oil in early spring.
Remove and destroy infested branches. Prune out galls; maintain tree vigor. Contact local agricultural extension in affected regions.
Spray with strong water jet or insecticidal soap. Use neem oil if infestation is heavy.

Uses

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Traditional Pulse Crop

Culinary

In some African and Asian cultures, young Erythrina seeds are cooked as a nutritious legume dish similar to beans. The seeds are high in protein and have been traditionally consumed in small quantities after proper preparation. [source]

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Ethnobotanical Medicine

Medicinal

Various Erythrina species, including E. lysistemon, have been used in traditional African and Asian medicine for treating insomnia, anxiety, and muscle pain. Alkaloid compounds in the plant are being studied for potential pharmaceutical applications. [source]

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Pollinator and Bird Food Source

Wildlife

The brilliant tubular flowers attract hummingbirds, sunbirds, and other nectar-feeding birds and insects. The seed pods provide sustenance for various bird species and wildlife. [source]

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Ornamental Specimen Tree

Household

Prized as a striking landscape ornamental in warm climates, providing dramatic spring color and interesting architectural form year-round. The tree serves as an excellent focal point in gardens and urban landscapes. [source]

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Cut Flower and Floral Design

Craft

The long-lasting, vibrant red-orange flowers are popular in floral arrangements and tropical bouquets, adding dramatic color and exotic appeal to cut flower displays. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest seed pods when they turn dry and dark (black), usually 2-3 months after flowering. Split pods to collect hard seeds. Seeds have hard seed coats and may require scarification (lightly sanding or soaking in warm water for 24 hours) before planting to improve germination. Cut flowers can be harvested for arrangements when fully open; flowers last 1-2 weeks in water.

Fun Facts

🌱 Erythrina lysistemon was designated as the official flower of the city of Los Angeles in 1961 and is called the 'Flamboyant' in Spanish-speaking regions, though it differs from the more common Delonix regia.
🌱 The tree's name 'Erythrina' comes from the Greek word 'erythros,' meaning red, referring to its brilliant flowers which are among the most vibrant in the plant kingdom.
🌱 The coral tree is nitrogen-fixing, as it is a legume, and can actually improve soil fertility, making it beneficial for surrounding plants and reducing the need for nitrogen fertilizers.

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