Divisi
When to plant Bambara groundnut in Eastern Cape
South Africa
Known here as indlubu · jugoboontjie
Bambara groundnut (Vigna subterranea) is one of Africa's own beans — a tough, low, bushy plant, often grown by the women of the household on the poorest, sandiest land where maize would fail.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 20 Sep 2026 – 29 Sep 2026 closed for this season | 8 Oct 2026 – 17 Nov 2026 |
| Expected harvest | about 1.2 t/ha | about 1.9 t/ha |
| Harvest | From 19 Dec 2026 to 18 Mar 2027, depending on the planting date | |
| Ready to harvest | 90–170 days after planting | |
| Work it takes | 77–157 days per hectare, by hand | |
| Rain meets its needs | 61% | |
Rain-fed. These dates are worked out from each place's own rainfall, for a field watered by the season — with irrigation a window can open earlier, close later, or come round more than once a year. Check your own field under What grows, or get the Divisi app for a calendar dated to your farm.
If you only get one chance to plant, aim for around 20 Sep 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Eastern Cape is close to normal, so these dates match the pattern the area usually follows.
Planting after 29 Sep 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Eastern Cape
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 76% |
For bambara groundnut in Eastern Cape, the lie of the land is the tightest of the three at 76%. You cannot flatten it, but you can farm it: plant along the contour rather than up and down, ridge or tie ridges to hold water on the slope, and expect shallower rooting than the crop would manage on flat ground.
The 2026 season in Eastern Cape
| When the rains are expected | May 2026 to May 2026 |
|---|---|
| Rain in a typical year | About 633 mm in a typical farming district |
| Across its districts | From about 534 mm in the driest of 8 districts to about 879 mm in the wettest |
| This season's rain | Rain close to usual — plan around about 633 mm falling roughly when it always does |
| What that supports | enough rain for a long crop, or two in a year, warm, with a cool spell that slows winter growth |
| Ground this covers | 7 kinds of ground. The season below is one typical farming district's, not a figure for the whole of this area. |
| 35% | too dry for rain-fed cropping without irrigation; warm, with a cool spell that slows winter growth no rain-fed season · about 350 mm |
|---|---|
| 17% | enough rain for one full main crop; warm, with a cool spell that slows winter growth 231 growing days · about 690 mm · September to May |
| 8% | enough rain for a long crop, or two in a year; warm, with a cool spell that slows winter growth 333 growing days · about 840 mm · July to July |
| 8% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 118 growing days · about 540 mm · December to April |
| 6% | enough rain for one short crop, and only if timed to it; cool for part of the year, so frost sets the planting date 125 growing days · about 550 mm · December to May |
| 5% | enough rain for one full main crop; cool for part of the year, so frost sets the planting date 218 growing days · about 700 mm · October to May |
| 4% | enough rain for a long crop, or two in a year; warm, with a cool spell that slows winter growth 281 growing days · about 890 mm · August to July |
last updated 18 September 2026 · from all 8 areas within it
Limited water holds back about 40% of yield here.
What bambara groundnut needs to grow here
| Soil it likes | well-drained sand or sandy loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.0 and 6.5 |
| Spacing | 40 cm between rows, 15 cm between plants |
| Feed it most with | phosphorus and calcium |
What it takes to grow bambara groundnut in Eastern Cape
| Planting material | About 125,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 60 kg per hectare — the crop fixes most of this itself; inoculated seed matters more than a bag |
| Phosphate (P₂O₅) | About 12 kg per hectare |
| Potash (K₂O) | About 30 kg per hectare |
| In the shops | A basal compound at planting — Compound D, or an NPK blend — covers the phosphate and potash. Skip the nitrogen top dressing; inoculated seed does that job. |
| Hand work | 77–157 days per hectare, by hand |
These are the nutrients a bambara groundnut crop of that size carries off the field. What you actually apply depends on what your soil already holds — which is what a soil test, or the app's field records, tell you.
What to watch for
Grow Bambara groundnut with a plan, not a guess
Everything above describes Eastern Cape as a whole — your own soil, slope and rainfall will shift the dates. The Divisi app works them out for your field, and dates each job that follows.
Bambara groundnut in nearby districts
This calendar moves
Planting windows shift with the forecast. Leave your email and we'll send what changed, and a note when planting time nears — a couple of emails a month at most.
Frequently asked questions
Will bambara groundnut grow well in Eastern Cape?
Eastern Cape rates as favourable for bambara groundnut.
When should I plant bambara groundnut in Eastern Cape?
Typically 20 Sep 2026 to 29 Sep 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Eastern Cape, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
