How to Grow Coralbean
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Coralbean
Erythrina herbacea
shrubCoralbean is a semi-woody perennial shrub native to the southeastern United States, known for its striking bright red tubular flowers that attract hummingbirds and pollinators. The plant produces coral-red bean pods containing toxic seeds that are traditionally used in jewelry and crafts. It typically grows 3-6 feet tall and dies back to the ground in winter in most climates.
When should you plant Coralbean in your zone?
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Example Coralbean timeline · Pittsburgh, PA (Zone 6b)
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Plant Coralbean
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 Coralbean
Around Aug 15≈ 120 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Coralbean dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 8-10; can be grown in zone 7b with winter protection
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Seedling
2-3 weeksSmall herbaceous sprouts with first true leaves appearing; plant is tender and low-growing.
Keep soil warm and moist; provide bright indirect light; protect from frost; thin seedlings if direct-seeded.
Vegetative Growth
4-6 weeksPlant develops multiple stems with compound leaflets; foliage is lush and green, spreading outward.
Water regularly; pinch stems to encourage bushier growth; apply balanced fertilizer monthly; provide support if needed in windy areas.
Fruiting
3-4 weeksFlowers fade and elongated coral-red seed pods develop, typically 4-8 inches long, containing hard bright red seeds.
Allow pods to mature on plant; do not harvest pods for crafts until completely dry and papery; wear gloves when handling seeds as they are toxic.
Dormancy
3-4 monthsIn zones 7-9, plant dies back to ground after frost; stems remain visible but are leafless; roots survive underground.
Cut back dead stems in late winter/early spring; mulch in zones 7-8 for winter protection; minimal watering needed.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use miticide if severe; improve air circulation around plant
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Spray with neem oil or insecticidal soap; attract beneficial insects like ladybugs
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Hand-pick if feasible; use spinosad or neem oil; remove plant debris where beetles overwinter
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Yellow sticky traps; spray with insecticidal soap or neem oil; encourage natural predators
Uses
Hummingbird Magnet
WildlifeThe bright red tubular flowers are a favorite nectar source for ruby-throated hummingbirds and other pollinators. Blooming from summer through fall provides essential fuel during migration. [source]
Jewelry and Ornamental Seeds
CraftThe brilliant coral-red seeds have been traditionally strung as beads and used in native crafts, leis, and decorative jewelry for centuries. Modern artisans continue this tradition. [source]
Dried Floral Arrangements
HouseholdDried seed pods add striking color and structure to dried arrangements and fall decorations, providing long-lasting visual interest. [source]
Traditional Ethnobotanical Uses
MedicinalVarious Erythrina species have been used in traditional medicine systems in tropical regions for pain relief and anti-inflammatory purposes, though safety and efficacy require caution and professional guidance. [source]
Edible Flowers
CulinaryYoung unopened flower buds can be steamed or cooked as a vegetable in some culinary traditions, though the plant is more commonly grown for ornamental and wildlife purposes. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
For seed pod crafts, harvest pods once they turn papery and dry (typically late summer to fall); shake pods to verify seeds rattle inside; store seeds in cool, dry location. Note: Seeds are toxic and should not be ingested; wear gloves when handling. Flowers are best enjoyed fresh on the plant to attract hummingbirds; they do not hold well in cut arrangements.
Fun Facts
- 🌱 Coralbean is native to the coastal plains of the southeastern United States and was an important plant to Native American tribes, who used the seeds in ceremonies and crafts.
- 🌱 The brilliant red seeds contain alkaloid compounds and are highly toxic if ingested; however, they remain unharmed when used for jewelry and crafts as long as skin contact is protected.
- 🌱 In frost-free zones (9-10), coralbean becomes a woody perennial shrub that can survive many years, but in zones 7-8 it typically dies back to the ground each winter like a herbaceous perennial.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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