How to Grow Coral Tree
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Coral Tree
Erythrina crista-galli
treeA deciduous to semi-evergreen tree native to South America, prized for its spectacular bright red or coral-colored flower clusters that appear in spring and summer. The tree typically grows 20-30 feet tall and produces distinctive curved, claw-like flowers that are highly attractive to hummingbirds and other pollinators. It makes an excellent ornamental specimen for warm climates and is the national flower of Argentina.
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Example Coral Tree timeline · Pittsburgh, PA (Zone 6b)
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Plant Coral Tree
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Coral Tree
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 9b-11; can be grown in zone 9a with protection
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Get my Coral Tree timeline →Growth Stages
Germination & Seedling
4-8 weeksSeeds germinate within 2-4 weeks; seedlings develop first true leaves and establish root system
Soak seeds for 24 hours before planting to improve germination. Keep soil moist but not waterlogged. Provide bright, indirect light. Transplant when 4-6 inches tall.
Establishment
1-2 yearsYoung tree develops strong root system and primary branching structure; slow growth phase
Water regularly but allow soil to dry between waterings. Protect from cold winds. Stake if necessary for support. Minimal pruning needed except to remove dead wood.
Vegetative Growth
1-3 yearsTree increases in height and width; develops dense foliage with pinnate leaves (compound leaflets). May be semi-deciduous, dropping leaves in winter
Continue regular watering during growing season. Fertilize monthly with balanced fertilizer or flowering formula. Prune in late winter to shape and remove weak branches.
Flowering
3-4 months (April-July typical in Northern Hemisphere)Spectacular bright red or coral-colored flower clusters (racemes) appear at branch tips; flowers are tubular, curved, and resemble a rooster's crest
Blooming typically occurs spring through summer. Apply low-nitrogen, higher-phosphorus fertilizer to encourage flowering. Deadhead spent flowers to extend bloom. Ensure adequate sunlight and warmth.
Dormancy & Rest
3-4 monthsIn winter, tree may become deciduous or semi-deciduous, dropping some or all foliage; growth slows dramatically
Reduce watering significantly; tree requires minimal water during dormancy. Withhold fertilizer. Protect from freezing temperatures; move container plants to sheltered location or provide frost cloth.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with neem oil or horticultural soap; increase humidity if growing in containers; remove affected foliage
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Remove with cotton swab dipped in isopropyl alcohol; apply neem oil spray; ensure good air circulation
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Scrape off manually; apply horticultural oil or neem oil in dormant season; prune heavily infested branches
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Yellow sticky traps; spray with neem oil or insecticidal soap; encourage natural predators
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Improve air circulation; remove affected leaves; apply sulfur dust or fungicide; reduce overhead watering
Uses
Edible Flowers
CulinaryThe spectacular coral flowers are occasionally used as edible garnishes in upscale cuisine, adding visual drama and a slightly sweet flavor to desserts and cocktails. [source]
Traditional Herbal Use
MedicinalIn South American folk medicine, Erythrina species have been traditionally used to treat inflammation, anxiety, and insomnia, though modern scientific evidence remains limited. [source]
Ornamental Landscape
HouseholdThe coral tree is one of the most visually striking ornamental trees for warm climates, providing vibrant color, structural interest, and year-round greenery. It serves as an excellent focal point, shade tree, and wildlife attractor. [source]
Hummingbird & Pollinator Plant
WildlifeThe tubular coral flowers are specifically adapted for and highly attractive to hummingbirds, which are primary pollinators. The tree also provides nectar for bees and other flying insects. [source]
Cut Flower Arrangements
CraftThe dramatic coral flower spikes are highly prized in floral design and tropical-themed arrangements, offering bold color and exotic appeal that lasts well in water. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Coral trees are grown ornamentally for flowers and foliage rather than harvest. Cut flowers for arrangements when blooms are fully open but still firm; they last 1-2 weeks in water. Collect seed pods after flowering if desired for propagation; dry completely before extracting seeds.
Fun Facts
- 🌱 The Coral Tree is the national flower of Argentina and also the floral emblem of several Argentine provinces, reflecting its cultural significance in South America.
- 🌱 The genus Erythrina includes over 100 species found throughout tropical regions worldwide, and many species are nitrogen-fixing plants that can enrich soil.
- 🌱 The tree's distinctive flower shape—resembling a rooster's crest—is reflected in its scientific name 'crista-galli,' which literally means 'rooster's comb' in Latin.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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