Photo by Melody

PlantFiles: Horse Gram, Madras Gram, Frijol Verde
Macrotyloma uniflorum

Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Macrotyloma
Species: uniflorum (yoo-nee-FLOR-um) (Info)

Synonym:Dolichos biflorus
Synonym:Dolichos uniflorus
Synonym:Macrotyloma uniflorum var. uniflorum

Vines and Climbers

4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)

9-12 in. (22-30 cm)

Not Applicable

Sun Exposure:
Full Sun

Seed is poisonous if ingested

Bloom Color:
Pale Yellow

Bloom Time:
Mid Summer
Late Summer/Early Fall
Mid Fall

Grown for foliage

Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
From seed; sow indoors before last frost
From seed; direct sow after last frost
From seed; germinate in a damp paper towel

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Click thumbnail
to view:

Thumbnail #1 of Macrotyloma uniflorum by WUVIE

Thumbnail #2 of Macrotyloma uniflorum by WUVIE

By onalee
Thumbnail #3 of Macrotyloma uniflorum by onalee

By onalee
Thumbnail #4 of Macrotyloma uniflorum by onalee

By onalee
Thumbnail #5 of Macrotyloma uniflorum by onalee

By onalee
Thumbnail #6 of Macrotyloma uniflorum by onalee


1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive onalee On Oct 17, 2009, onalee from Brooksville, FL (Zone 9a) wrote:

Native to India, this enthusiastic annual will cover a fence in a season and produces small, pale yellow pea blossoms in the peak of summer (mine took about 100 days from plant to first blooms).

Throughout the tropics, Indian Horse Gram Bean is grown for its nutritious seeds, which make excellent sprouts, and as animal fodder. As it grows, it adds nitrogen to your soil as well as producing dainty (1/2"), pale yellow pea blooms. Plant in full sun with something to climb on. It likes regular watering, but is fairly drought-tolerant and very easy to grow.

Although I've seen this being sold as a "Yellow Hyacinth Bean", and one of it's botanical names is "Dolichos", apart from producing beans, I have to say that is it NOT similar to a Hyacinth bean vine. The flowers are single, not in large clusters like the purple and white hyacinth beans and the leaves are much smaller. Expecting to get masses of blooms from this vine like you do with the Dolichos Lablab Hyacinth beans will lead to disappointment. The Indian Horse gram is a lovely vine, but I would NOT say that it's a "Yellow Hyacinth Bean".


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

Brooksville, Florida
Hulbert, Oklahoma

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