How to Grow Rice Beans
On this page
Rice beans (Vigna umbellata) — Frost-tender annual climber.
Rice Bean (Vigna umbellata)
2 sources cited
Soil & Growing Conditions
Quick Facts
Harvest & Storage
Rice bean through the season
Plan your Rice Beans planting
Timing for Rice Beans follows soil temperature and frost, not the calendar date. The Global vegetable planting calendar explains the method. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.
What the research guides add
Rice bean is a short-day legume of the Himalayan foothills, and Feedipedia lists the conditions it tolerates.
- A short-lived perennial legume usually grown as an annual, and a fast summer-growing crop found from sea level up to 1,500 m in Assam and 2,000 m in the Himalayan hills. (Feedipedia)
- It requires a short day length to produce seeds. (Feedipedia)
- It does better where average temperatures range from 18 to 30°C and tolerates 10 to 40°C, but does not withstand frost. (Feedipedia)
- It is suited to annual rainfall of 1,000 to 1,500 mm but is fairly tolerant of drought; it can better tolerate harsh conditions than cowpea, including waterlogging and acid soils. (Feedipedia)
- It grows on a wide range of soils, including shallow, infertile or degraded soils; high soil fertility may hinder pod formation and reduce seed yield. (Feedipedia)
- In India and Nepal it is sown in February and March for a summer harvest and in July and August for a December harvest. (Feedipedia)
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 Rice Bean in another region
Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.
Sources
These 2 sources are specific to this region. 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 rice beans; they describe the plant itself, which is the same wherever it grows.
Frequently Asked Questions
What soil pH do rice beans need?
A pH of about 6.8–7.5. 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
This page gives you the thresholds; the planner turns them into your own calendar. It works from what you can observe and measure in your garden rather than from dates written for somebody else’s latitude.
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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 international horticultural research and extension sources. 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.
Related guides
More from the same group (peas & beans):
Where To Go From Here
Take this crop from reading into a written plan for your own beds.
Keep going
Plan the next step
Use the printable SoilCommander planner for your region to turn this guide into sowing dates, bed layouts and weekly garden tasks.