Asparagus bean

VarietyVigna unguiculata subsp. sesquipedalis

Also called Yard-long bean, yardlong bean, long-podded cowpea, Chinese long bean, snake bean, long string bean, Vigna unguiculata sesquipedalis

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Asparagus bean
Photo: Francisco Manuel Blanco (O.S.A.) · Public domain · Wikimedia Commons

Fact sheet

every fact quoted from its source
Typeboots

from Bean · “L.L.Bean Boots” — L.L.Bean - Outside Together Since 1912Pause VideoPause Video

Days to germination6–10 days

from Bean · “Seeds generally germinate in soil temperatures between 60 and 80°F, with germination time ranging from 6 to 10 days, depending on the temperature” — Holmes Seed Company – Bean Growing Guide

Days to maturity60 days

“Days to Maturity 60” — Asparagus Bean Growing Guide — SproutSmart

Germination temperature70 °F

“Germination Temp (°F) 70” — Asparagus Bean Growing Guide — SproutSmart

LightFull Sun

“Light: Full Sun·Maturity: 60 Days·Habit: Clumping” — Asparagus Bean Growing Guide — SproutSmart

WaterAt least 1 inch per week

from Vigna unguiculata · “Water At least 1 inch per week” — Cowpeas: How To Grow and Care for Black-Eyed Pea Plants

Soil pH6

from Vigna unguiculata · “Soil pH Well-draining, fertile soil with a pH of 6.0+” — Cowpeas: How To Grow and Care for Black-Eyed Pea Plants

Hardiness zonesZone 7b

“Zone 7b” — Asparagus Bean Growing Guide — SproutSmart

Spacing11.5–12.5 in

from Vigna unguiculata · “Plant the seeds with the eye facing down 1-2 inches deep with no more than 8 plants per 1 foot in a row and 30 inches between rows” — Cowpeas: How To Grow and Care for Black-Eyed Pea Plants

Height12–24 in

from Vigna unguiculata · “Bush plants typically grow 1-2 feet, and vining varieties can reach around 3 feet” — Cowpeas: How To Grow and Care for Black-Eyed Pea Plants

Propagationseed

from Vigna unguiculata · “Plant cowpea seeds outdoors” — Cowpeas: How To Grow and Care for Black-Eyed Pea Plants

Transplant—

from Vigna unguiculata · “Transplant shows "—" because Cowpeas is best direct sown where it will grow. Transplanting can disturb the roots and slow growth.” — Cowpeas Planting Guide | Zones, Dates & Tips

Ready whenpencil-thin and still flexible

“pick young when pencil-thin and still flexible” — Yardlong Bean (Asparagus bean) care guide | Growli

Edible partspods

“tender, ribbon-long pods unfurl with a silken snap and a delicately sweet, green-bean flavor” — Asparagus Bean Growing Guide — SproutSmart

Toxicitynot toxic

“Mildly toxic to pets” — Yardlong Bean (Asparagus bean) care guide | Growli

Indoorswarm, humid summer conditions

“high humidity suits it provided airflow is good” — Yardlong Bean (Asparagus bean) care guide | Growli

Pestsaphids, leaf-feeding caterpillars

“Asparagus bean is often hit by aphids and leaf-feeding caterpillars, which can stunt growth and reduce pod quality.” — Asparagus Bean Growing Guide — SproutSmart

Diseasesfungal leaf issues

“Avoid overhead watering to reduce fungal leaf issues, and remove heavily affected leaves early to slow spread.” — Asparagus Bean Growing Guide — SproutSmart

Companionspearl millet, wheat, corn, squash summer, sunflower, millet, sunflowers

from Vigna unguiculata · “interplant them among other crops that are good companions, like pearl millet or wheat” — Cowpeas: How To Grow and Care for Black-Eyed Pea Plants

Keep away fromfennel, onion

from Vigna unguiculata · “❌ Keep Away From Fennel Onion” — Cowpeas Planting Guide | Zones, Dates & Tips

Who grows this

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