Divisi
When to plant Yam in Morogoro Urban
Morogoro, United Republic of Tanzania
Known here as kiazi kikuu
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 | 12 Oct 2026 – 1 Nov 2026 opens in 2 weeks | 21 Jan 2026 – 1 Jan 2027 |
| Expected harvest | about 15.2 t/ha | about 23.2 t/ha |
| Harvest | From 10 Apr 2027 to 27 Sep 2027, depending on the planting date | |
| Ready to harvest | 180–330 days after planting | |
| Rain meets its needs | 87% | |
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 1 Nov 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Morogoro Urban is close to normal, so these dates match the pattern the area usually follows.
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 Morogoro Urban
| Rain and temperature | 96% |
|---|---|
| The soil | 76% |
| The lie of the land | 88% |
For yam in Morogoro Urban, the soil is the tightest of the three at 76%. This is the one you can actually move. Lime raises a sour soil, manure and compost lift what it holds, and both work within a season or two — money spent here changes the answer.
The 2026/27 season in Morogoro Urban
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | October 2026 to June 2027 |
| Rain in a typical year | About 762 mm |
| This season's rain | Rain close to usual — plan around about 762 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +1.1 °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 | 4 kinds of ground. The season below is the largest that farms — about 76% of this area. |
| 76% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 239 growing days · about 820 mm · October to June |
|---|---|
| 10% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 289 growing days · about 1,200 mm · September to July |
| 10% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 250 growing days · about 890 mm · October to June |
| 3% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 300 growing days · about 1,430 mm · September to July |
last updated 16 September 2026
Limited water 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 Morogoro Urban
| Planting material | About 10,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 57 kg per hectare |
| Phosphate (P₂O₅) | About 17 kg per hectare |
| Potash (K₂O) | About 87 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 Morogoro Urban 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 Morogoro Urban?
Morogoro Urban rates as favourable for yam.
When should I plant yam in Morogoro Urban?
Typically 12 Oct 2026 to 1 Nov 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Morogoro Urban, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
