Divisi
When to plant Lettuce in Kati
Kusini 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 | Favourable | |
| When to plant | 20 Apr 2027 – 20 May 2027 opens in 29 weeks | 10 Jun 2027 – 9 Aug 2027 |
| Expected harvest | about 10.3 t/ha | about 17.8 t/ha |
| Harvest | From 4 Jun 2027 to 3 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 meets its needs | 97% | |
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 5 May 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Kati is close to normal, so these dates match the pattern the area usually follows.
Planting after 20 May 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Kati
| Rain and temperature | 60% |
|---|---|
| The soil | 96% |
| The lie of the land | 96% |
For lettuce in Kati, rain and temperature is the tightest of the three at 60%. 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 2026 season in Kati
| When the rains are expected | August 2026 to August 2026 |
|---|---|
| Rain in a typical year | About 1,631 mm |
| This season's rain | Rain close to usual — plan around about 1,631 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 64% of this area. |
| 64% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 325 growing days · about 1,510 mm · August to August |
|---|---|
| 20% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 293 growing days · about 1,410 mm · October to July |
| 5% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 303 growing days · about 1,460 mm · October to August |
| 5% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 267 growing days · about 1,220 mm · October to July |
last updated 16 September 2026
Temperature holds back about 60% 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 Kati
| Nitrogen (N) | About 26 kg per hectare |
|---|---|
| Phosphate (P₂O₅) | About 10 kg per hectare |
| Potash (K₂O) | About 52 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 Kati 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 Kati?
Kati rates as favourable for lettuce.
When should I plant lettuce in Kati?
Typically 20 Apr 2027 to 20 May 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Kati, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
