Erythrina herbacea L.
Coralbean, Cherokee bean, Red cardinal
Fabaceae (Pea Family)
Synonym(s): Erythrina arborea
USDA Symbol: erhe4
Coralbean is a low, glossy-leaved, thorny shrub to 6 ft. with many herbaceous, annual stems arising from the woody lower stem and perennial root. The long-petioled, leaflets are distinctively arrowhead-shaped. Leaves are alternate, scattered along the stem, 3 leaflets forming the leaf, which is often prickly beneath. The leaves are 3-5 inches long and 3 1/2-4 inches wide. Leaves fall in winter and before they reappear in spring, upright spikes of showy, tubular flowers adorn the bare branches. The scarlet-red flowers, 12 inches long in spike-like clusters, on the upper portion 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.
This unusual tropical tree extends its range northward as a shrub or perennial herb, but is killed back to the ground each winter. Planted for the showy flowers and seeds, although the brittle branches are subject to damage by windstorms. In Mexico, the toxic seeds have been used for poisoning rats and fish. Although novelties and necklaces can be made from the seeds, they should be kept away from children.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Leaf Retention: Deciduous
Leaf Arrangement: Alternate
Size Notes: 6-12 feet.
Size Class: 6-12 ft.
Bloom InformationBloom Color: Red
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
DistributionUSA: AL , AR , FL , GA , LA , MS , NC , SC , TX
Native Distribution: Coastal plain from s.e. NC to TX and Tamaulipas
Native Habitat: From North Central to South Texas and ranges to coastal states along the Gulf of Mexico. Well-drained sand, loam, clay. Open, sandy woods & clearings of the coastal plains
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Cold Tolerant: yes
Soil Description: Sandy soils. Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay, Acid-based, Calcareous
Conditions Comments: Coralbean is opulent with scarlet blooms that resemble numerous crescent moons. Trim dead stem tips after new growth emerges in spring when frost damage becomes evident. Be careful of spines on the stems. The top often freezes back in winter but return with vigor in the spring from underground, tuberous root stumps. The seed pods split open to reveal bright red seeds, providing visual interest long after flowering. The seeds are highly toxic if ingested.
BenefitUse Ornamental: Attractive, Blooms ornamental, Fruits ornamental
Use Wildlife: Nectar-hummingbirds
Warning: Seeds are poisonous to humans if eaten. Sensitivity to a toxin varies with a personís age, weight, physical condition, and individual susceptibility. Children are most vulnerable because of their curiosity and small size. Toxicity can vary in a plant according to season, the plantís different parts, and its stage of growth; and plants can absorb toxic substances, such as herbicides, pesticides, and pollutants from the water, air, and soil.
Conspicuous Flowers: yes
Interesting Foliage: yes
PropagationPropagation Material: Seeds
Description: Very easily propagated from scarified seed, semi-hardwood cuttings and root division.
Seed Collection: Collect seeds in late summer through early fall. Fumigate and store in sealed containers at room temperature.
Seed Treatment: Scarification
Commercially Avail: yes
Mr. Smarty Plants says
Shrub for part shade for hedge in Holly Ridge NC
April 07, 2010
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March 21, 2008
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From the National Suppliers DirectoryAccording to the inventory provided by Associate Suppliers, this plant is available at the following locations:
Sanibel-Captiva Conservation Foundation Native Plant Nursery - Sanibel, FL
Hill Country Natives - Leander, TX
Far South Wholesale Nursery - Austin, TX
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Lady Bird Johnson Wildflower Center - Austin, TX
Native Plant Society of Texas - Fredericksburg, TX
Crosby Arboretum - Picayune, MS
Texas Parks and Wildlife Department - Austin, TX
NPSOT - Austin Chapter - Austin, TX
National Butterfly Center - Mission, TX
Mt. Cuba Center - Hockessin, DE
Wildflower Center Seed BankLBJWC-1209 Collected 2008-09-27 in Nueces County by Lady Bird Johnson Wildflower Center
BibliographyBibref 765 - McMillen's Texas Gardening: Wildflowers (1998) Howard, D.
Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.
Bibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. Wasowski
Bibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller
Bibref 291 - Texas Wildscapes: Gardening for Wildlife (1999) Damude, N. & K.C. Bender
Search More Titles in Bibliography
Research LiteratureReslit 1378 - Antibacterial Constituents from the Roots of Erythrina herbacea against Methicillin-resistant Staphylococcus aureus (2010) H. Tanaka, M. Sudo, T. Kawamura, M. Sato, R. Yamag...
Reslit 1803 - First report of soybean rust caused by Phakopsora pachyrhizi on Erythrina herbacea (Coral bean) (2008) A. J. Gevens, N. Nequi, A. Vitoreli, J. J. Marois,...
Reslit 2233 - Axial Rotation of Erythrina herbacea Leaflets (1984) T. J. Herbert
This information was provided by the Florida WIldflower Foundation.
Search More Titles in Research Literature
Additional resourcesUSDA: Find Erythrina herbacea in USDA Plants
FNA: Find Erythrina herbacea in the Flora of North America (if available)
Google: Search Google for Erythrina herbacea
MetadataRecord Modified: 2008-10-31
Research By: TWC Staff