Coral Bean
erythrina flabelliformis
Also known as: ["Coral Tree","Red Bean"]
Overview
A deciduous shrub or small tree native to the southwestern United States and Mexico, known for its striking red flowers and toxic seeds.
Benefits & Perks
["long-flowering","drought tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Fabales |
| Family: | Fabaceae |
| Genus: | Erythrina |
| Botanical Name: | Erythrina flabelliformis |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: sunny, sheltered location in the garden, or large container in a warm, sunny spot
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"10–35°C"}
- Hardiness: {"zones":"8–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining, sandy loam with organic matter. Cactus or succulent mix is ideal.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: high
- Pruning Frequency: Annually, after flowering, or as needed to remove dead/diseased branches.
- Pruning Intensity: Light to moderate. Avoid heavy pruning unless necessary for shaping or health.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily). Tolerates partial shade but may flower less.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight to prevent scorching. In hot climates, provide some afternoon shade to protect from extreme heat. Indoors, place near a south-facing window.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun
Rotate plant for even growth; use sheer curtains in intense summer sun; avoid sudden light changes.
Watering
every 7–10 days during active growth, less frequently in winter
Water thoroughly but infrequently; ensure soil dries between waterings; avoid overwatering, especially in winter.
Soil
well-draining, sandy or loamy soil with low organic matter
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure pots have drainage holes; avoid heavy clay soils; top-dress with compost annually.
Temperature
Thrives in warm temperatures (65–85°F or 18–29°C). Tolerates mild frosts but prefers frost-free conditions.
Avoid sudden temperature shifts; protect from frost; ensure good air circulation in heat.
Fertilizing
every 4–6 weeks during spring and summer, none in winter
Avoid over-fertilizing, which can harm roots; apply fertilizer to moist soil to prevent root burn; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings or seed. Stem cuttings are more reliable for home growers.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Keep moist and warm.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm (70–80°F or 21–27°C), humid, and bright but indirect light. Protect from direct sun.
Medium
Well-draining mix of perlite and peat moss or cactus mix.
Hormone
Rooting hormone is recommended to improve success rates.
Timeline
Roots may form in 4–8 weeks; establish in new pot after 3–6 months.
Tools Needed
Pruning shears, rooting hormone, small pots, well-draining medium, misting spray bottle.
Quick Tips
Use healthy, non-flowering stems; maintain consistent moisture; provide bottom heat if possible.
Pruning & Repotting
Pruning Guide
Method
Use clean cuts just above a bud or branch junction. Remove crossing or crowded branches to improve air circulation.
Pruning Plan
Prune to shape the plant, encourage flowering, and remove dead or diseased wood. Light pruning after flowering is ideal.
Tools
Pruning shears, loppers (for larger branches), sterilizing solution.
Checklist
Sterilize tools; prune after flowering; remove dead/diseased wood; shape as desired.
Repotting Guide
Best Season
Early spring before new growth begins.
Pot Size
Increase pot size by 2–3 inches in diameter.
Method
Remove plant gently; trim roots if crowded; place in new pot with fresh soil; water thoroughly.
Suggestions
Repot every 2–3 years or when roots fill the pot. Young plants may need repotting annually.
Checklist
Choose appropriate pot; prepare fresh soil mix; trim roots if needed; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure drainage; adjust frequency by season.
How to Apply Water Properly
Water at the base of the plant, ensuring moisture reaches the root zone. Water early in the morning to minimize evaporation and allow foliage to dry. Ensure excess water drains away to prevent root rot.
Watering Schedule Tips
Water deeply once every 7–10 days during spring and summer; reduce to every 3–4 weeks in fall and winter. Adjust based on rainfall and soil dryness.
Soil Improvement
Add perlite or coarse sand to improve drainage. Incorporate compost for fertility and structure.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis or leaf drop in cold stress; wilting or scorching in excessive heat.
Cold Stress
Low temperatures slow growth and may cause leaf drop. Prolonged cold can damage branches or kill young plants.
Solution: Protect with frost cloth or mulch in winter. Move potted plants indoors or to a sheltered location if temperatures drop below 30°F (-1°C).
Hot Stress
Excessive heat can cause leaf scorch, wilting, or reduced flowering. Stress may lead to pest susceptibility.
Solution: Provide afternoon shade in extreme heat. Water deeply to keep roots cool. Use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Use balanced fertilizer; apply in spring; dilute liquid feeds; stop in winter.
Fertilizing Method
Use a balanced, slow-release fertilizer in early spring. Apply a diluted liquid fertilizer monthly during growing season. Reduce or stop fertilizing in fall and winter.
Common Problems & Solutions
Toxicity Warning
Cats
ToxicCats are highly sensitive to the toxic alkaloids present in Erythrina flabelliformis. Ingestion can result in severe gastrointestinal upset and neurological complications, which may be life-threatening.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
ToxicThe toxic alkaloids in Erythrina flabelliformis can cause severe gastrointestinal and neurological symptoms in dogs. Ingestion of even small amounts of seeds or other plant parts can lead to serious health issues.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
ToxicErythrina flabelliformis contains toxic alkaloids that can cause significant physiological disturbances, including neuromuscular blockade and cardiovascular effects. The plant's seeds are particularly potent and can lead to severe poisoning if ingested.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Erythrina flabelliformis toxic to pets?
A: Yes, it is toxic to dogs and cats.
Q: Does this plant require a lot of water?
A: No, it is drought tolerant and prefers well-drained soil.
Q: Does it attract wildlife?
A: Yes, it attracts bees, butterflies, and birds with its flowers.
Quick Reference
| Family: | Fabaceae |
| Care: | moderate |
| Light: | full sun |
| Water: | every 7–10 days during activ |
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