Divisi
When to plant Yam in South Ethiopia
Ethiopia
Yam is a climbing vine that grows one big food tuber underground over a long 7-11 month season.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 6 Feb 2027 – 7 Apr 2027 opens in 18 weeks | 10 Jun 2026 – 28 Oct 2026 |
| Expected harvest | about 16.7 t/ha | about 22.4 t/ha |
| Harvest | From 5 Aug 2027 to 2 Mar 2028, depending on the planting date | |
| Ready to harvest | 180–330 days after planting | |
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 26 Feb 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for South Ethiopia is close to normal, so these dates match the pattern the area usually follows.
Planting after 7 Apr 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in South Ethiopia
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 45% |
For yam in South Ethiopia, 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 2026/27 season in South Ethiopia
| When the rains are expected | February 2026 to January 2027 |
|---|---|
| Rain in a typical year | About 1,269 mm in a typical farming district |
| Across its districts | From about 543 mm in the driest of 12 districts to about 1,492 mm in the wettest |
| Rainy seasons, district by district | Of 12 districts: one rainy season in 3 and two rainy seasons in 5 |
| This season's rain | Rain close to usual — plan around about 1,269 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +1.3 °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 a long crop, or two in a year, 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. |
| 23% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 291 growing days · about 940 mm · March to December |
|---|---|
| 14% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 306 growing days · about 1,170 mm · March to January |
| 10% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 309 growing days · about 1,340 mm · February to December |
| 9% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season no rain-fed season · about 440 mm |
| 7% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 153 growing days · about 610 mm · October to December |
| 6% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 263 growing days · about 970 mm · March to November |
| 5% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 277 growing days · about 1,250 mm · February to November |
| 4% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 317 growing days · about 1,480 mm · February to December |
last updated 17 September 2026 · from all 12 areas within it
Sloping ground holds back about 35% of yield here.
What yam needs to grow here
| Soil it likes | well-drained sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.5 and 7.0 |
| Spacing | 100 cm between rows, 100 cm between plants |
| Feed it most with | nitrogen and potassium |
What it takes to grow yam in South Ethiopia
| Planting material | About 10,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 63 kg per hectare |
| Phosphate (P₂O₅) | About 18 kg per hectare |
| Potash (K₂O) | About 96 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. |
These are the nutrients a yam 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 Yam with a plan, not a guess
Everything above describes South Ethiopia 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.
Yam 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 yam grow well in South Ethiopia?
South Ethiopia rates as favourable for yam.
When should I plant yam in South Ethiopia?
Typically 6 Feb 2027 to 7 Apr 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across South Ethiopia, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
