Divisi
When to plant Groundnut in Mathira
Nyeri, 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 | 6 Sep 2026 – 10 Jan 2027 open now | 9 Aug 2026 – 28 Oct 2026 |
| Expected harvest | about 0.9 t/ha | same |
| Harvest | From 5 Dec 2026 to 9 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 | 92% | |
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 29 Nov 2026. That is the point in the window where the rains are most reliably established.
This season's outlook for Mathira 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 10 Jan 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Mathira
| Rain and temperature | 45% |
|---|---|
| The soil | 96% |
| The lie of the land | 60% |
For groundnut in Mathira, rain and temperature is the tightest of the three at 45%. 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 2026 season in Mathira
| When the rains are expected | August 2026 to August 2026 |
|---|---|
| Rain in a typical year | About 1,273 mm |
| This season's rain | Leaning wet — make sure water can drain off the field. |
| What that supports | enough rain for a long crop, or two in a year, warm all year, so nothing but rain ends the season |
| Ground this covers | 4 kinds of ground. The season below is the largest that farms — about 52% of this area. |
| 52% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 329 growing days · about 1,300 mm · February to January |
|---|---|
| 15% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 365 growing days · about 1,630 mm · January to December |
| 10% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 293 growing days · about 1,050 mm · September to July |
| 5% | enough rain for a long crop, or two in a year; cold for much of the year, with a short planting season 332 growing days · about 1,880 mm · January to December |
last updated 30 September 2026
Temperature holds back about 65% 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 Mathira
| Planting material | About 247,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 50 kg per hectare — the crop fixes most of this itself; inoculated seed matters more than a bag |
| Phosphate (P₂O₅) | About 9 kg per hectare |
| Potash (K₂O) | About 27 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.
Grow Groundnut with a plan, not a guess
Everything above describes Mathira 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 Mathira?
Mathira rates as moderate for groundnut.
When should I plant groundnut in Mathira?
Typically 6 Sep 2026 to 10 Jan 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Mathira, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
