How to Grow Marama Beans | Planting & Establishment

Marama Bean (Tylosema esculentum)

A scatter of reddish-brown marama bean seeds. Photo: Bonolo Nikita Rankaga, CC0, via Wikimedia Commons.

2 sources cited

Marama beans (Tylosema esculentum) — Long-lived perennial with a large tuberous root.

Unlike an annual crop, the work here is front-loaded into establishment: get the planting and the site right and the same plants crop for several seasons.

Soil & Growing Conditions

A marama bean plant trailing across Kalahari sand — “Tylosema esculentum” by dune_ninja is licensed under CC0. Source: iNaturalist — “Tylosema esculentum” by dune_ninja is licensed under CC0. Source: iNaturalist.

Water: Very low; native to 100-900 mm rainfall with long periods of drought

Soil pH range

5.5 7

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

Quick Facts

A marama bean flower photographed beside a ruler for scale — “Tylosema esculentum” by Riana Fourie is licensed under CC0. Source: iNaturalist — “Tylosema esculentum” by Riana Fourie is licensed under CC0. Source: iNaturalist.

Factor	Value
Soil pH	5.5 - 7
Soil texture	Sandy and limestone soils including dolomite; not on soils over granite or basalt
Drainage	Free-draining
Lifecycle	Long-lived perennial with a large tuberous root; several years from sowing to first crop.

Harvest & Storage

A marama bean pod among the leaves — “Tylosema esculentum” by Robert Taylor is licensed under CC BY 4.0. Source: iNaturalist — “Tylosema esculentum” by Robert Taylor is licensed under CC BY 4.0. Source: iNaturalist.

When to pick: Not a crop for one season: PROTA records 2-4 years to first flowering and about 3.5 years to seed. Young tubers can be dug earlier and eaten as a vegetable.

Marama bean in the Kalahari

A scatter of reddish-brown marama bean seeds — “Morama” by Bonolo Nikita Rankaga is licensed under CC0. Source: Wikimedia Commons — “Morama” by Bonolo Nikita Rankaga is licensed under CC0. Source: Wikimedia Commons.

The bean

Reddish-brown and hard. PROTA puts the seed at roughly 30% protein and 40% oil, which is why marama keeps appearing on lists of underused crops.

The distinctive two-lobed leaf of marama bean — “Tylosema esculentum” by dune_ninja is licensed under CC0. Source: iNaturalist — “Tylosema esculentum” by dune_ninja is licensed under CC0. Source: iNaturalist.

How to know it

The two-lobed leaf is diagnostic for Tylosema and separates marama at a glance from every other trailing legume.

A young marama bean seedling on sandy ground — “Tylosema esculentum” by Robert Taylor is licensed under CC BY 4.0. Source: iNaturalist — “Tylosema esculentum” by Robert Taylor is licensed under CC BY 4.0. Source: iNaturalist.

Early growth

Above ground it is slow. Below ground it is building the tuberous root that carries it through years of drought.

The habit

Trailing stems reach up to 6 m across open sand, from a single perennial rootstock.

Marama bean stems trailing over red rock — “Morama bean” by Ee nn yy is licensed under CC BY-SA 4.0. Source: Wikimedia Commons — “Morama bean” by Ee nn yy is licensed under CC BY-SA 4.0. Source: Wikimedia Commons.

Its own ground

Sandy and limestone soils, including dolomite, but not soils formed over granite or basalt.

Bright yellow marama bean flowers among two-lobed leaves — “Tylosema esculentum” by Riana Fourie is licensed under CC0. Source: iNaturalist — “Tylosema esculentum” by Riana Fourie is licensed under CC0. Source: iNaturalist.

The flower

Yellow petals that age to reddish, carried in lateral racemes. PROTA records 2-4 years before a plant first flowers.

Flower, to scale

A ruler in the frame. Marama flowers are substantial for a legume of dry country.

Marama bean flowers and unopened buds — “Tylosema esculentum” by Robert Taylor is licensed under CC BY 4.0. Source: iNaturalist — “Tylosema esculentum” by Robert Taylor is licensed under CC BY 4.0. Source: iNaturalist.

Buds and open flowers

Flowering runs October to March in southern Africa.

In dry scrub

Native to rainfall of 100-900 mm with long periods of drought and daily maxima around 37C.

The pod

Woody, holding one or two seeds. PROTA gives about 3.5 years from sowing to first seed.

References

2 independent sources are cited for this crop. Where they disagree - soil pH is the clearest case - every figure is preserved rather than averaged into false precision.

Frequently Asked Questions

What soil pH do marama 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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SoilCommander Editorial Team

Science-based growing guides · Thresholds that hold in any climate

This guide states the conditions the plant itself responds to — soil temperature, frost tolerance, day length — rather than dates, because the same calendar month means opposite seasons in the northern and southern hemispheres. Anything genuinely restricted to one part of the world is named as such rather than presented as universal. Written and maintained by our editorial team against international horticultural research and extension sources.

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How to Grow Marama Beans | Planting & Establishment

Marama Bean (Tylosema esculentum)

Soil & Growing Conditions

Quick Facts

Harvest & Storage

Marama bean in the Kalahari

References

Frequently Asked Questions

Where To Go From Here

Plan the next step

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How to Grow Marama Beans | Planting & Establishment

Marama Bean (Tylosema esculentum)

Soil & Growing Conditions

Quick Facts

Harvest & Storage

Marama bean in the Kalahari

References

Frequently Asked Questions

Where To Go From Here

Plan your veg garden before you dig a single inch

Plan the next step