How to Grow Winged Beans
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Winged beans (Psophocarpus tetragonolobus) — Perennial climbing or twining herb, usually grown as a frost-tender annual.
Winged Bean (Psophocarpus tetragonolobus)
2 sources cited
Quick Facts
Soil & Growing Conditions
Harvest & Storage
Winged bean through the season
Plan your Winged Beans planting
Timing for Winged 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
Winged bean has an unusual timing problem: it flowers only as the days shorten, yet it cannot take frost.
- A climbing plant similar in growth habit to the ordinary garden pole bean, grown as a good soil-nitrifying legume; some varieties produce a large tuberous root eaten cooked and raw in Asia. (UF/IFAS Extension)
- Winged bean tubers average 20% protein, compared with under 7% for potatoes and yams. (UF/IFAS Extension)
- Most varieties need short days to start flowering but are frost sensitive, so in South Florida they must be grown through the winter; farther north, the shorter days of late autumn give the best results. (UF/IFAS Extension)
- Prepare the soil, plant the seed and care for the plants as for pole beans. Seed is not easy to find, though some catalogues advertise it. (UF/IFAS Extension)
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 Winged 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 winged beans; they describe the plant itself, which is the same wherever it grows.
Frequently Asked Questions
What soil pH do winged beans need?
A pH of about 5.5–7. 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
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Where To Go From Here
Take this crop from reading into a written plan for your own beds.
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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.