Divisi
When to plant Cotton in Tarime
Mara, United Republic of Tanzania
Known here as pamba
Cotton is grown for one thing: the soft white fibre — the lint — that grows wrapped around the seeds inside a pod called a boll.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 20 Jul 2026 – 1 Jan 2027 open now | 21 Jan 2026 – 1 Jan 2027 |
| Expected harvest | about 2.1 t/ha | about 3.6 t/ha |
| Harvest | From 17 Dec 2026 to 30 Jul 2027, depending on the planting date | |
| Ready to harvest | 150–210 days after planting | |
| Work it takes | 91–187 days per hectare, by hand | |
| Rain meets its needs | 94% | |
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 17 Nov 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Tarime is close to normal, so these dates match the pattern the area usually follows.
Planting after 1 Jan 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Tarime
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 60% |
For cotton in Tarime, the lie of the land is the tightest of the three at 60%. 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 2025 season in Tarime
| When the rains are expected | July 2025 to July 2025 |
|---|---|
| Rain in a typical year | About 1,257 mm |
| This season's rain | Rain close to usual — plan around about 1,257 mm falling roughly when it always does |
| 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 32% of this area. |
| 32% | 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 1,250 mm · July to July |
|---|---|
| 27% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 340 growing days · about 1,130 mm · July to July |
| 24% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 266 growing days · about 890 mm · September to June |
| 16% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 297 growing days · about 970 mm · August to June |
last updated 16 September 2026
Sloping ground holds back about 15% of yield here.
What cotton needs to grow here
| Soil it likes | well-drained sandy loam, loam, clay loam or clay soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 6.0 and 7.5 |
| Spacing | 90 cm between rows, 25 cm between plants |
| Feed it most with | nitrogen, potassium and boron |
What it takes to grow cotton in Tarime
| Planting material | About 80,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 59 kg per hectare |
| Phosphate (P₂O₅) | About 29 kg per hectare |
| Potash (K₂O) | About 63 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 | 91–187 days per hectare, by hand |
These are the nutrients a cotton 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 Cotton with a plan, not a guess
Everything above describes Tarime 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.
Cotton 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 cotton grow well in Tarime?
Tarime rates as favourable for cotton.
When should I plant cotton in Tarime?
Typically 20 Jul 2026 to 1 Jan 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Tarime, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
