Divisi
When to plant Irish potato in Central
Tigray, Ethiopia
Known here as dinich
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 | 13 Jun 2027 – 3 Jul 2027 opens in 36 weeks | 21 Jan 2026 – 1 Jan 2027 |
| Expected harvest | 23.7–23.8 t/ha | about 16.6 t/ha |
| Harvest | From 22 Aug 2027 to 10 Nov 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-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 23 Jun 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Central is close to normal, so these dates match the pattern the area usually follows.
Planting after 3 Jul 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Central
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 45% |
For irish potato in Central, the lie of the land is the tightest of the three at 45%. 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 2027 season in Central
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | June 2027 to September 2027 |
| Rain in a typical year | About 604 mm |
| This season's rain | Rain close to usual — plan around about 604 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +1.8 °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 short crop, and only if timed to it, warm all year, so nothing but rain ends the season |
| Ground this covers | 3 kinds of ground. The season below is the largest that farms — about 74% of this area. |
| 74% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 99 growing days · about 620 mm · June to September |
|---|---|
| 23% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 97 growing days · about 620 mm · June to September |
| 3% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 100 growing days · about 600 mm · June to September |
last updated 16 September 2026
Sloping ground holds back about 35% of yield here.
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 Central
| Planting material | About 47,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 79 kg per hectare |
| Phosphate (P₂O₅) | About 24 kg per hectare |
| Potash (K₂O) | About 138 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 Central 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.
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 Central?
Central rates as favourable for irish potato.
When should I plant irish potato in Central?
Typically 13 Jun 2027 to 3 Jul 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Central, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
