Divisi
When to plant Lettuce in Rosfa
Setif, Algeria
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 Oct 2026 – 10 Oct 2026 open now | 22 Mar 2027 – 21 May 2027 |
| Expected harvest | 5.0–6.1 t/ha | about 18.7 t/ha |
| Harvest | From 15 Nov 2026 to 24 Dec 2026, 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 | 72% | |
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 Oct 2026. That is the point in the window where the rains are most reliably established.
No seasonal forecast reaches Rosfa yet, so these dates follow the rains it usually gets rather than this year's.
Planting after 10 Oct 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Rosfa
| Rain and temperature | 60% |
|---|---|
| The soil | 76% |
| The lie of the land | 88% |
For lettuce in Rosfa, 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 Rosfa
| Rain in a typical year | About 361 mm |
|---|---|
| This season's rain | Rain close to usual — plan around about 361 mm falling roughly when it always does |
| What that supports | enough rain for one short crop, and only if timed to it, cool for part of the year, so frost sets the planting date |
| Ground this covers | 4 kinds of ground. The season below is the largest that farms — about 64% of this area. |
| 64% | enough rain for one short crop, and only if timed to it; cool for part of the year, so frost sets the planting date 115 growing days · about 370 mm |
|---|---|
| 23% | enough rain for one short crop, and only if timed to it; cool for part of the year, so frost sets the planting date 151 growing days · about 330 mm · October to March |
| 9% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 128 growing days · about 270 mm |
| 5% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 135 growing days · about 280 mm |
last updated 18 September 2026
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 Rosfa
| Nitrogen (N) | About 14 kg per hectare |
|---|---|
| Phosphate (P₂O₅) | About 6 kg per hectare |
| Potash (K₂O) | About 28 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 Rosfa 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 Rosfa?
Rosfa rates as moderate for lettuce.
When should I plant lettuce in Rosfa?
Typically 1 Oct 2026 to 10 Oct 2026, typical season.
Is this exact for my own field?
No — these are readings taken across Rosfa, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
