Asparagus Bean

Vine

Asparagus Bean

Vigna unguiculata subsp. sesquipedalis

Also known as: Yardlong bean, Snake bean, Dow gauk

Vine Fabaceae EdibleNitrogen FixerPollinatorAnimal Fodder
Hardiness Zone
3-11
Ideal Temp
70–95°F
Survives Down To
32°F
Life Cycle
Annual

Vigna unguiculata subsp. sesquipedalis is the cowpea that learned to climb—long tender pods, heat tolerance that laughs at common beans, and vines that will annex your fence if you blink. subtropical and tropical Americas: Plant after soil warms; produces through brutal summer when Phaseolus sulk. Keep picking or pods go fibrous fast. ☀️💧 Sun and Water Requirements: - Full sun for heaviest pod set; fertile, well-drained soil. - Steady moisture during flowering and pod set; drought during bloom drops pods overnight. ✂️ Propagation: - Direct-sow once nights stay warm; inoculate with cowpea rhizobia if you want the nitrogen bragging rights. - Reseed every warm season in frost pockets; perennial only where frost never trims the crown. 🌾 Harvest / Best Use Timing: - Pick pods pencil-thick daily; missed pods become fibrous teaching moments.

Good Neighbors
  • Corn
  • Sweet Potato
  • Marigold
Cautions
  • Cold wet soil at planting
  • Letting pods hide until they qualify as fiber supplements
Known Threats — Organic Solutions Only
Banded Cucumber Beetle
Diabrotica balteata
Bean Aphid
Aphis fabae
Bean Leaf Beetle
Cerotoma trifurcata
Bean Weevil
Acanthoscelides obtectus
Brown Marmorated Stink Bug
Halyomorpha halys
Corn Earworm
Helicoverpa zea
Cowpea Curculio
Chalcodermus aeneus
Fall Armyworm
Spodoptera frugiperda
Fusarium Wilt
Fusarium oxysporum
Ganoderma Butt Rot
Ganoderma spp.
Harlequin Ladybird
Harmonia axyridis
Kudzu Bug
Megacopta cribraria
Locust Borer
Megacyllene robiniae
Locust Leaf Miner
Odontota dorsalis
Lubber Grasshopper
Romalea microptera
Pea Moth
Cydia nigricana
Pea Weevil
Bruchus pisorum
Pythium Root Rot
Pythium spp.
Reniform Nematode
Rotylenchulus reniformis
Root Aphid
Pemphigus spp.
Soybean Looper
Chrysodeixis includens
Spittlebugs
Cercopidae
Spotted Cucumber Beetle
Diabrotica undecimpunctata howardi
Stink Bug
Pentatomidae
Striped Cucumber Beetle
Acalymma vittatum
Velvetbean Caterpillar
Anticarsia gemmatalis
White Rot
Sclerotinia sclerotiorum