How to Grow Moth Beans USA

By the SoilCommander Editorial Team, under the guidance of Nitin Sharma, Co-Founder · · How we check our facts

On this page
  1. Moth Bean (Vigna aconitifolia)
  2. Quick Facts
  3. Soil & Growing Conditions
  4. Harvest & Storage
  5. Moth bean through the season
  6. Plan your Moth Beans planting
  7. What the research guides add
  8. Moth bean in the USA: climate data
  9. Growing Moth Bean in another region
  10. Sources
  11. Frequently Asked Questions

In the US, moth beans are ready to harvest 75–90 days after planting.

Moth beans (Vigna aconitifolia) — Frost-tender annual.

The short answer

Ready in
75–90 days
Site
soil pH 6.5–7.5

Moth Bean (Vigna aconitifolia)

Whole and split moth bean seeds on a white plate. Photo: Lalitstar at English Wikipedia, CC BY-SA 3.0

2 sources cited

Quick Facts

Whole and split moth bean seeds on a white plate — “Matki” by Lalitstar at English Wikipedia is licensed under CC BY-SA 3.0.
“Matki” by Lalitstar at English Wikipedia is licensed under CC BY-SA 3.0.
Factor Value
Soil pH 6.5 - 7.5
Optimal growing temp 75-90°F (24-32°C)
Time to harvest 75-90 days
Soil texture Particularly suitable for dry light sandy soils; will not tolerate waterlogging
Drainage Free-draining
Lifecycle Frost-tender annual; the most drought-resistant pulse crop known.

Soil & Growing Conditions

Moth bean plants trailing over stony red soil — “Vigna aconitifolia” by Siddarth Machado is licensed under CC BY 4.0. Source: iNaturalist
“Vigna aconitifolia” by Siddarth Machado is licensed under CC BY 4.0. Source: iNaturalist.

Water: Very low; the most drought-resistant pulse crop, succeeds on 200-300 mm

Soil pH range

6.5 7.5

Span reflects genuine variation between the cited authorities, not a single agreed figure.

Harvest & Storage

A moth bean flower and slender pod on sandy ground — “Vigna aconitifolia” by Aravinth is licensed under CC BY 4.0. Source: iNaturalist
“Vigna aconitifolia” by Aravinth is licensed under CC BY 4.0. Source: iNaturalist.

When to pick: Pods dry on the trailing stems; the whole plant is often cut once the majority have matured.

Plan your Moth Beans planting

When to sow and plant Moth Beans depends on your own frost dates. Check the USA vegetable planting calendar. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.

What the research guides add

Moth bean is a bean for the hottest part of the year, and Florida Extension compares its needs to those of Southern peas.

  • A hot weather, drought resistant legume, most popular as a crop in India. Its climatic requirements are compared to Southern peas, although moth bean is a short day plant. (UF/IFAS Extension)
  • Use cultural practices similar to Southern peas: plant the seeds 3 inches apart and thin to 6 inches to allow for proper plant spread. (UF/IFAS Extension)

Moth bean in the USA: climate data

City USDA zone Last spring freeze (32°F) First fall freeze (32°F) Freeze-free days
Bismarck, ND 4a 14 May 27 Sep 136
Madison, WI 5b 1 May 10 Oct 160
Milwaukee, WI 6a 19 Apr 29 Oct 192
Atlanta, GA 8a 15 Mar 20 Nov 252
Orlando, FL 10a 25 Jan winter freezes only 355
San Diego, CA 11a none in a median year none in a median year 365

Dates are the median 32°F freeze dates and freeze-free days from NOAA NCEI U.S. Climate Normals 1991–2020; zones come from the USDA 2023 Plant Hardiness Zone Map (ZIP code of each city centre).

Sources for this section

Section researched and checked on 25 October 2026 by the SoilCommander Editorial Team. How we check facts: editorial policy.

Last verified 2026-10-25

Growing Moth Bean in another region

Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.

Sources

The full list of 2 sources behind this guide (Plant Resources of Tropical Africa (PROTA), Useful Tropical Plants (tropical.theferns.info)) is in the references of our UK guide to moth beans; they describe the plant itself, which is the same wherever it grows.

Frequently Asked Questions

How long do moth beans take to grow?

Typically 75–90 days, depending on cultivar and growing conditions.

What soil pH do moth beans need?

A pH of about 6.5–7.5. That span reflects genuine variation between the authorities we cite rather than a single agreed figure — the References section lists each source's exact range.

Plan next season before the problems start

Almost everything on this page resolves to your own frost dates rather than the calendar — the last spring frost moves by roughly two months between zone 3 and zone 10. The USA Garden Planner works from your zone so the timing is already decided before the season starts.

Get the USA Garden Planner →

Instant PDF download · Written for US growing conditions

SoilCommander Editorial Team — under the guidance of Nitin Sharma, Co-Founder

Every growing guide is checked against RHS, USDA Cooperative Extension, and other named horticultural authorities before publishing. How we check our facts.

How this guide is put together

The growing data on this page — sowing windows, pests, diseases, soil and site requirements — comes from named horticultural sources, listed in References below, checked against USDA hardiness-zone and frost-date data, with Cooperative Extension sources cited directly where one exists for a crop. An automated pipeline assembles that verified data into the page you're reading: it selects which facts to lead with and builds the surrounding prose and layout. It does not invent a date, a source or a number — where a verified value for a field isn't available, the page leaves it out rather than guessing. A person reviews and publishes each page; nothing goes live unverified.

Vegetable Growing Guides USA

Related guides

More from the same group (peas & beans):

Relevant next steps

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