Yard Long Bean, Asparagus Bean

Vigna sesquipedalis

Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Vigna (VIG-nuh) (Info)
Species: sesquipedalis (ses-kwee-ped-AY-liss) (Info)
Synonym:Vigna unguiculata subsp. sesquipedalis
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8-10 ft. (2.4-3 m)


Unknown - Tell us

Seed Type:

Unknown - Tell us

Growth Habit:


Sun Exposure:

Full Sun


Unknown - Tell us

Days to Maturity:

51 to 60 days

Bloom Color:

Pale Pink

White/Near White

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Propagation Methods:

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

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


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

Woodland, Alabama

Tucson, Arizona

Menifee, California

Monticello, Georgia

La Porte, Indiana

Heflin, Louisiana

Ijamsville, Maryland

Eaton Rapids, Michigan

Waynesboro, Mississippi

Saint Louis, Missouri

Saint Ignatius, Montana

Las Cruces, New Mexico

Wading River, New York

Winston Salem, North Carolina

Williamsburg, Ohio

Mustang, Oklahoma

Beaumont, Texas

Fort Worth, Texas

San Antonio, Texas

Alexandria, Virginia

Stafford, Virginia

Bremerton, Washington

Falling Waters, West Virginia

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Gardeners' Notes:


On Nov 12, 2010, george123nkeze from Tucson, AZ wrote:

I've been growing this plant in tucson Arizona for two years. they gorw best from late winter to early summer and then late summer through November. they are best eaten when they are 10 to 14 inches long.


On Mar 7, 2009, Beta_Vulgaris from Eaton Rapids, MI wrote:

This is a very interesting plant that grows extremely well in clay soil as long as it gets plenty of sun. The flowers are very ornamental and the beans taste great stir-fried in a garlic sauce. I grew them like regular beans and they got about 7 feet tall, without any fertilizer.

P.S. I would like to point out that there are a few varieties of yard-long bean, including a few sub-species.


On May 16, 2003, mcscience from Stony Brook, NY wrote:

This is a fun and easy plant! Tastes good, too. I like to mix them with normal beans.