Divisi
When to plant Irish potato in Kajiado
Kenya
Known here as viazi mviringo · kiazi
The Irish potato (mbatatisi, ikirayi, viazi mviringo) is a cool-weather crop grown for the tubers that swell underground — it is not a grain, and it is not the same plant as sweet potato.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 12 Oct 2026 – 1 Nov 2026 opens in 2 weeks | 21 Jan 2026 – 1 Jan 2027 |
| Expected harvest | 23.3–29.6 t/ha | about 45.0 t/ha |
| Harvest | From 21 Dec 2026 to 11 Mar 2027, depending on the planting date | |
| Ready to harvest | 70–130 days after planting | |
| Work it takes | 110–185 days per hectare, by hand | |
| Rain meets its needs | 85% | |
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 22 Oct 2026. That is the point in the window where the rains are most reliably established.
This season's outlook for Kajiado 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 1 Nov 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Kajiado
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 96% |
For irish potato in Kajiado, rain and temperature is the tightest of the three at 96%. 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 Kajiado
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | March 2026 to June 2026 |
| Rain in a typical year | About 568 mm in a typical farming district |
| Across its districts | From about 520 mm in the driest of 5 districts to about 818 mm in the wettest |
| Rainy seasons, district by district | Of 5 districts: one rainy season in 1 and two rainy seasons in 4 |
| This season's rain | Leaning wet — make sure water can drain off the field. |
| What that supports | enough rain for one short crop, and only if timed to it, warm all year, so nothing but rain ends the season |
| Ground this covers | 8 kinds of ground. The season below is one typical farming district's, not a figure for the whole of this area. |
| 32% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 167 growing days · about 580 mm · February to May |
|---|---|
| 13% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 136 growing days · about 490 mm · March to June |
| 12% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 169 growing days · about 510 mm · February to May |
| 12% | too dry for rain-fed cropping without irrigation; warm all year, so nothing but rain ends the season no rain-fed season · about 360 mm |
| 8% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 192 growing days · about 720 mm · February to June |
| 7% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 191 growing days · about 690 mm · February to June |
| 4% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 237 growing days · about 880 mm · October to June |
| 3% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 151 growing days · about 460 mm · March to May |
last updated 16 September 2026 · from all 5 areas within it
What irish potato needs to grow here
| Soil it likes | well-drained loam or sandy loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.0 and 6.5 |
| Spacing | 75 cm between rows, 28 cm between plants |
| Feed it most with | potassium and magnesium |
What it takes to grow irish potato in Kajiado
| Planting material | About 47,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 98 kg per hectare |
| Phosphate (P₂O₅) | About 30 kg per hectare |
| Potash (K₂O) | About 172 kg per hectare |
| In the shops | A basal compound at planting — Compound D, or an NPK blend — covers the phosphate and potash. A nitrogen top dressing — urea or AN — goes on once the crop is established. |
| Hand work | 110–185 days per hectare, by hand |
These are the nutrients a irish potato 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 Irish potato with a plan, not a guess
Everything above describes Kajiado 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.
Where to sell Irish potato nearby
Irish potato 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 irish potato grow well in Kajiado?
Kajiado rates as favourable for irish potato.
When should I plant irish potato in Kajiado?
Typically 12 Oct 2026 to 1 Nov 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Kajiado, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
