Divisi
When to plant Lettuce in Kaskazini B
Kaskazini Unguja, United Republic of Tanzania
Known here as saladi · letusi
Lettuce is a fast, leafy salad crop grown for its crisp, tender leaves — and because people eat it raw, you must grow it clean.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Moderate | |
| When to plant | 1 May 2027 – 21 May 2027 opens in 30 weeks | 10 Jun 2027 – 9 Aug 2027 |
| Expected harvest | about 8.2 t/ha | about 16.5 t/ha |
| Harvest | From 15 Jun 2027 to 4 Aug 2027, depending on the planting date | |
| Ready to harvest | 45–75 days after planting | |
| Work it takes | 40–80 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 1 May 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Kaskazini B is close to normal, so these dates match the pattern the area usually follows.
Planting after 21 May 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Kaskazini B
| Rain and temperature | 45% |
|---|---|
| The soil | 76% |
| The lie of the land | 88% |
For lettuce in Kaskazini B, rain and temperature is the tightest of the three at 45%. 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 2025 season in Kaskazini B
| When the rains are expected | August 2025 to August 2025 |
|---|---|
| Rain in a typical year | About 1,555 mm |
| This season's rain | Rain close to usual — plan around about 1,555 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 | 2 kinds of ground. The season below is the largest that farms — about 90% of this area. |
| 90% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 363 growing days · about 1,580 mm · August to August |
|---|---|
| 10% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 341 growing days · about 1,460 mm · August to August |
last updated 16 September 2026
Temperature holds back about 65% of yield here.
What lettuce needs to grow here
| Soil it likes | well-drained sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 6.0 and 6.8 |
| Spacing | 38 cm between rows, 30 cm between plants |
| Feed it most with | nitrogen, potassium and calcium |
What it takes to grow lettuce in Kaskazini B
| Nitrogen (N) | About 20 kg per hectare |
|---|---|
| Phosphate (P₂O₅) | About 8 kg per hectare |
| Potash (K₂O) | About 41 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 | 40–80 days per hectare, by hand |
These are the nutrients a lettuce 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 Lettuce with a plan, not a guess
Everything above describes Kaskazini B 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.
Lettuce 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 lettuce grow well in Kaskazini B?
Kaskazini B rates as moderate for lettuce.
When should I plant lettuce in Kaskazini B?
Typically 1 May 2027 to 21 May 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Kaskazini B, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
