PlantFiles is getting a new look! Just in time for spring, we're rolling out a new look for the best online plants database. It will also work with your smart phones and mobile devices, so now you can take it with you on garden center visits or botanical garden tours. Questions or comments? Please post them here.

Hyacinth Bean
Lablab purpureus 'Antaque Rouge'

Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Lablab (LAB-lab) (Info)
Species: purpureus (pur-PUR-ee-us) (Info)
Cultivar: Antaque Rouge
Synonym:Dolichos lablab




6-8 ft. (1.8-2.4 m)


9-12 in. (22-30 cm)

12-15 in. (30-38 cm)


Not Applicable

Sun Exposure:

Full Sun


Parts of plant are poisonous if ingested

Bloom Color:

Magenta (Pink-Purple)


Bloom Time:

Mid Summer

Blooms repeatedly



Other details:

Flowers are fragrant

Average Water Needs; Water regularly; do not overwater

Self-sows freely; deadhead if you do not want volunteer seedlings next season

Flowers are good for cutting

Suitable for growing in containers

Soil pH requirements:

6.6 to 7.5 (neutral)

Patent Information:


Propagation Methods:

From seed; direct sow after last frost

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Properly cleaned, seed can be successfully stored


This plant has been said to grow in the following regions:

Irvington, Alabama

Joppa, Alabama

Dover, Delaware

Chiefland, Florida

Deland, Florida

Lakeland, Florida

New Port Richey, Florida

Chicago, Illinois

Kansas City, Kansas

Paintsville, Kentucky

West Monroe, Louisiana

Albuquerque, New Mexico

High Point, North Carolina

Norristown, Pennsylvania

West Newton, Pennsylvania

Summerville, South Carolina

Nashville, Tennessee

Oak Ridge, Tennessee

Austin, Texas

Brazoria, Texas

Fort Worth, Texas

Garland, Texas

Houston, Texas

show all

Gardeners' Notes:


On Jul 16, 2010, tardis from Albuquerque, NM wrote:

This is a spectacular, easy to grow vine with abundant, exceptionally fragrant flower clusters, beautiful purple seed pods and attractive, large black and white seeds. I wish more people knew about this lovely plant.


On May 2, 2010, John_in_Garland from Garland, TX wrote:

Caution eating mature dry seed: High concentrations of cyanogenic glucosides (cyanide).

Don't know my variety. Puple flowers, purple pods. Vigorous growth in N. Texas. Save seed from dry pods. Good at least 2 years with refrigeration.


On Dec 29, 2009, anniegolden from Dover, DE wrote:

I think the beans in 'Jack and the Beanstalk' must have been Hyacinth Beans. The vines are very long (15 feet or more) and the flowers and beans are produced non-stop until frost. It was fun to grow, and pretty, but I had to cut it back more than once during the summer. The young pods are edible and we liked them best in minestrone since they are flat like romano beans. The black and white seeds are striking also.


On Feb 4, 2008, Xeramtheum from Summerville, SC (Zone 8a) wrote:

A rare variety from the Mascarene Islands in the Indian Ocean. Purple flowers and pods.