Coral Bean Erythrina herbacea
Other Common Name(s):
Previously known as:
- Erythrina arborea
- Phonetic Spelling
- er-ih-THREE-nah her-BAY-see-ah
- This plant has low severity poison characteristics.
- See below
- Description
-
This tropical herbal perennial shrub grows mainly in coastal areas and in sandy, open woodlands, clearings, and in naturalized areas. In cooler zones, it may freeze above ground in winter but will regrow in the spring. Its main attraction is coral-red flowers in a crescent moon shape which are attractive to hummingbirds. It grows well in loamy clay soils and is often used to add color to a garden area.
Coral bean is a low, glossy-leaved, thorny shrub, growing up to 6 ft. with many herbaceous, annual stems arising from the woody lower stem and perennial root. Three arrow-shaped leaflets, one leaf, each have a long stalk attaching to their stem.
Leaves fall in winter and before reappearing in spring, upright spikes of showy, tubular flowers appear on the bare branches. The bright-red flowers, up to 12 inches long in spike-like clusters, occur on the upper part of the stem. There are 5 united sepals and 5 petals 1 1/2-2 inches long, with the upper petal wrapped around the other 4. These are followed by a persisent legume pod containing several bright red beans. The pod is blackish, constricted between the seeds, and up to 8 1/2 inches long. The seeds are firmly attached to the pod by a sturdy 1/8-inch-long thread and will remain in place for months.
Seeds are poisonous to humans if eaten, and can especially be a problem for children due to their smaller size. Sensitivity to a toxin can vary by person characteristics and susceptibility and by plant season. If propagating from the seeds, they should be collected in the fall and well fumigated and stored in a secure container, away from children. Scarify or scratch the outer coat of the seeds before planting in the spring.
- See this plant in the following landscape:
- Cultivars / Varieties:
-
- Tags:
- Cultivars / Varieties:
-
- Tags:
-
-
Attributes:
- Genus:
- Erythrina
- Species:
- herbacea
- Family:
- Fabaceae
- Uses (Ethnobotany):
- Necklaces are made from the seeds though they should be kept away from children.
- Life Cycle:
- Perennial
- Woody
- Recommended Propagation Strategy:
- Root Cutting
- Seed
- Stem Cutting
- Country Or Region Of Origin:
- Mexico and southern USA
- Distribution:
- Southern and southeastern states
- Wildlife Value:
- Flowers attract hummingbirds.
- Edibility:
- Caution is encouraged in human use as an herb. Flowers and young leaves may be cooked and eaten, however, all parts of the plant have low toxicity. Symptoms mainly occur with ingestion of seeds. Symptoms are vomiting and diarrhea; prior to modern medicine concoctions from the plant were used to relieve constipation.
- Dimensions:
- Height: 6 ft. 0 in. - 12 ft. 0 in.
- Width: 3 ft. 0 in. - 6 ft. 0 in.
-
-
Whole Plant Traits:
- Plant Type:
- Poisonous
- Shrub
- Woody Plant Leaf Characteristics:
- Deciduous
- Growth Rate:
- Slow
- Maintenance:
- Low
- Appendage:
- Thorns
-
-
Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Clay
- Loam (Silt)
- Sand
- Soil pH:
- Acid (<6.0)
- Soil Drainage:
- Good Drainage
- Available Space To Plant:
- 6-feet-12 feet
- NC Region:
- Coastal
- USDA Plant Hardiness Zone:
- 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
-
-
Fruit:
- Fruit Color:
- Black
- Red/Burgundy
- Fruit Value To Gardener:
- Showy
- Display/Harvest Time:
- Summer
- Fruit Type:
- Legume
- Fruit Length:
- > 3 inches
- Fruit Description:
- A persistent 8 1/2" long black bean pod constricted between red beans. Displays from July to September.
-
-
Flowers:
- Flower Color:
- Red/Burgundy
- Flower Value To Gardener:
- Long Bloom Season
- Showy
- Flower Bloom Time:
- Fall
- Spring
- Summer
- Flower Shape:
- Funnel
- Flower Petals:
- 4-5 petals/rays
- asymmetrical petals
- fused petals
- Flower Description:
- Flowers appear before leaves from May to July, are in an elongated terminal cluster, somewhat tube-shaped, and scarlet in color. Their bloom can be up to 12 inches long with 5 fused sepals and 5 petals. The upper petal wraps around the 4 other petals.
-
-
Leaves:
- Woody Plant Leaf Characteristics:
- Deciduous
- Leaf Feel:
- Glossy
- Prickly
- Leaf Type:
- Compound (Pinnately , Bipinnately, Palmately)
- Leaf Arrangement:
- Alternate
- Hairs Present:
- No
- Leaf Length:
- 3-6 inches
- Leaf Width:
- 3-6 inches
- Leaf Description:
- Leaves are alternate, scattered along the stem. Three leaflets form the leaf, which can be prickly underneath.
-
-
Stem:
- Stem Is Aromatic:
- No
-
-
Landscape:
- Landscape Theme:
- Pollinator Garden
- Attracts:
- Hummingbirds
- Problems:
- Poisonous to Humans
- Problem for Children