Divisi
When to plant Bambara groundnut in City of Cape Town
Western 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.
| Fit | Favourable |
|---|---|
| When to plant | 8 Oct 2026 – 17 Nov 2026 opens in 1 week |
| Expected harvest | about 1.6 t/ha |
| Harvest | From 6 Jan 2027 to 6 May 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-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 28 Oct 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for City of Cape Town is close to normal, so these dates match the pattern the area usually follows.
Planting after 17 Nov 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in City of Cape Town
| Rain and temperature | 88% |
|---|---|
| The soil | 96% |
| The lie of the land | 88% |
For bambara groundnut in City of Cape Town, rain and temperature is the tightest of the three at 88%. This one is fixed. It is why the planting window above is where it is — hitting those dates is the whole of your control here.
The 2027 season in City of Cape Town
| When the rains are expected | April 2027 to October 2027 |
|---|---|
| Rain in a typical year | About 499 mm |
| This season's rain | Rain close to usual — plan around about 499 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +1.0 °C over the growing months. Heat makes the same rain do less, so a dry spell bites sooner: do not plant late, and shade or mulch what you can. |
| What that supports | enough rain for one full main crop, warm, with a cool spell that slows winter growth |
| Ground this covers | 4 kinds of ground. The season below is the largest that farms — about 67% of this area. |
| 67% | enough rain for one full main crop; warm, with a cool spell that slows winter growth 203 growing days · about 600 mm · April to October |
|---|---|
| 14% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 167 growing days · about 500 mm · April to September |
| 12% | enough rain for one full main crop; cool for part of the year, so frost sets the planting date 215 growing days · about 640 mm · March to November |
| 7% | enough rain for one full main crop; warm, with a cool spell that slows winter growth 206 growing days · about 540 mm · April to October |
last updated 17 September 2026
Temperature holds back about 20% 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 City of Cape Town
| Planting material | About 125,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 80 kg per hectare — the crop fixes most of this itself; inoculated seed matters more than a bag |
| Phosphate (P₂O₅) | About 16 kg per hectare |
| Potash (K₂O) | About 40 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 City of Cape Town 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.
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 City of Cape Town?
City of Cape Town rates as favourable for bambara groundnut.
When should I plant bambara groundnut in City of Cape Town?
Typically 8 Oct 2026 to 17 Nov 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across City of Cape Town, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
