Divisi
When to plant Groundnut in Westlands
Nairobi, Kenya
Known here as karanga · njugu
Groundnut (peanut) is a low, leafy legume that does something no other crop in your field does: it flowers above the ground, but then each fertilised flower sends a little stalk — a peg — down into the soil, and the nut grows and fills underground.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Moderate | |
| When to plant | 16 Sep 2026 – 14 Jan 2027 open now | 9 Aug 2026 – 7 Dec 2026 |
| Expected harvest | about 1.0 t/ha | about 2.1 t/ha |
| Harvest | From 15 Dec 2026 to 13 Jun 2027, depending on the planting date | |
| Ready to harvest | 90–150 days after planting | |
| Work it takes | 71–126 days per hectare, by hand | |
| Rain meets its needs | 69% | |
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 15 Nov 2026. That is the point in the window where the rains are most reliably established.
This season's outlook for Westlands leans wet. Plant at the early end of the window, and make sure water can drain off the field — a wet year does more damage through waterlogging than through the rain itself.
Planting after 14 Jan 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Westlands
| Rain and temperature | 76% |
|---|---|
| The soil | 76% |
| The lie of the land | 60% |
For groundnut in Westlands, the lie of the land is the tightest of the three at 60%. 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 Westlands
| Rainy seasons | Two each year — two chances to plant |
|---|---|
| When the rains are expected | February 2026 to June 2026 |
| Rain in a typical year | About 838 mm |
| This season's rain | Leaning wet — January, February, October, November and December look heavier than usual. Make sure water can drain off the field; a wet year does more damage through waterlogging and disease than through the rain itself. |
| 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 all year, so nothing but rain ends the season |
| Ground this covers | 2 kinds of ground. The season below is the largest that farms — about 80% of this area. |
| 80% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 239 growing days · about 890 mm · February to July |
|---|---|
| 20% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 212 growing days · about 790 mm · February to June |
last updated 30 September 2026
Temperature holds back about 45% of yield here.
What groundnut needs to grow here
| Soil it likes | well-drained sandy loam or sandy soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.9 and 7.0 |
| Spacing | 45 cm between rows, 9 cm between plants |
| Feed it most with | phosphorus, potassium and calcium |
What it takes to grow groundnut in Westlands
| Planting material | About 247,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 55 kg per hectare — the crop fixes most of this itself; inoculated seed matters more than a bag |
| Phosphate (P₂O₅) | About 10 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 | 71–126 days per hectare, by hand |
These are the nutrients a 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 Groundnut with a plan, not a guess
Everything above describes Westlands 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.
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 groundnut grow well in Westlands?
Westlands rates as moderate for groundnut.
When should I plant groundnut in Westlands?
Typically 16 Sep 2026 to 14 Jan 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Westlands, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
