Asparagus Bean

Family: Fabaceae Legume

Planting Schedule

Provide your location or planting zone to unlock dates and add Asparagus Bean to a garden.

Tender, ribbon-long pods unfurl with a silken snap and a delicately sweet, green-bean flavor that feels bright and fresh from the garden.

Asparagus Bean forms long, slender pods that stay crisp and pleasantly succulent at maturity, making them ideal for quick roasting, stir-fry-style sautéing, and vibrant fresh use in salads; the pods also shine in savory sauces and pickling for a tangy bite. Grow for a steady harvest over weeks—each new pod is a promise of tender texture and garden-fresh flavor.

Light: Full SunMaturity: 60 DaysHabit: Clumping

Botanical illustration of Asparagus Bean

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Asparagus Bean Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Direct Sow	Jun 1st	Jul 31st – Aug 1st
Zone 2a	Direct Sow	May 25th	Jul 24th – Aug 29th
Zone 2b	Direct Sow	May 15th	Jul 14th – Aug 25th
Zone 3a	Direct Sow	May 15th	Jul 14th – Sep 1st
Zone 3b	Direct Sow	May 19th	Jul 18th – Sep 21st
Zone 4a	Direct Sow	May 15th	Jul 14th – Sep 24th
Zone 4b	Direct Sow	May 13th	Jul 12th – Sep 27th
Zone 5a	Direct Sow	May 8th	Jul 7th – Sep 30th
Zone 5b	Direct Sow	May 4th	Jul 3rd – Oct 5th
Zone 6a	Direct Sow	May 1st	Jun 30th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	Jun 24th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	Jun 19th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	Jun 9th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	May 31st – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	May 22nd – Nov 12th
Zone 9a	Direct Sow	Mar 6th	May 5th – Nov 26th
Zone 9b	Direct Sow	Feb 9th	Apr 10th – Dec 9th
Zone 10a	Continuous Production
Zone 10b	Continuous Production
Zone 11a	Continuous Production
Zone 11b	Continuous Production
Zone 12a	Continuous Production
Zone 12b	Continuous Production
Zone 13a	Continuous Production
Zone 13b	Continuous Production

Crop Details

Trait	Value
Days to Maturity	60
Sun Requirements	Full Sun
Growth Habit	Clumping
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	55
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

These asparagus beans are all about that ribbon-long, tender snap—heat them fast so they blister without turning starchy. Their lightly sweet, green brightness loves sharp seasonings (lemon, soy, vinegar) that wake them up instead of burying them.

Best Uses

hot, fast stir-fry with garlic and a glossy soy-sesame coat
roasting until the pods blister at the edges while staying pleasantly succulent
quick pickling for tangy, crunchy bites
tossing in salads with a vinaigrette that clings without wilting the snap

Flavor Profile

delicately sweet, green-bean flavor silken-tender pods with a tight, crisp snap fresh, lightly vegetal brightness

Kitchen Pairings

garlic soy sauce lemon sesame oil ginger butter

Frequently Asked Questions

What pest or disease commonly affects Vigna sesquipedalis (asparagus bean), and how do I control it?

Asparagus bean is often hit by aphids and leaf-feeding caterpillars, which can stunt growth and reduce pod quality. Check plants 2–3 times per week and spray aphids off with a strong water jet, then use insecticidal soap if they rebound; for caterpillars, hand-pick and apply Bacillus thuringiensis (Bt) when larvae are small. Avoid overhead watering to reduce fungal leaf issues, and remove heavily affected leaves early to slow spread.

How often should I water Vigna sesquipedalis during the main growing phase?

During pod production, keep the soil evenly moist but not waterlogged—aim for watering when the top 1 inch of soil feels dry. In hot weather, this usually means about 1 inch of water per week total (split into 2 waterings if needed to prevent drying between them). Mulch after plants establish to stabilize moisture and help prevent pod stress from drying out.

How can I tell when Vigna sesquipedalis is ready to harvest?

Harvest pods when they’re young and tender—typically around 60 days from sowing—before seeds inside noticeably swell. Pick pods every 2–3 days once harvest starts, when pods are long but still snap easily and feel firm rather than tough. If pods get stringy or hard to puncture with a fingernail, they’re past peak and will slow further production.