Divisi
When to plant Mandarin in Saint-Louis
Sénégal
Known here as mandarine
The mandarin (also called tangerine or naartjie) is the hardiest and easiest-to-peel of the citrus trees — a small, spreading evergreen that lives and bears fruit for decades.
| Fit | Favourable |
|---|---|
| When to plant (establish) | 21 Jan 2026 – 1 Jan 2027 open now |
| Expected harvest | about 24.1 t/ha |
| Work it takes | 91–203 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 Jan 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Saint-Louis leans dry, so these dates sit later than the long-run average. Planting on the date you are used to risks germinating into a false start and having to replant.
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 Saint-Louis
| Rain and temperature | 88% |
|---|---|
| The soil | 76% |
| The lie of the land | 96% |
For mandarin in Saint-Louis, 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 2027 season in Saint-Louis
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | July 2027 to October 2027 |
| Rain in a typical year | About 281 mm in a typical farming district |
| Across its districts | From about 281 mm in the driest of 3 districts to about 306 mm in the wettest |
| This season's rain | Leaning dry — September looks short of rain. Plant at the early end of the window, favour quicker and more drought-tolerant crops, and keep moisture in the soil: mulch, and weed early. |
| This season's heat | Hotter than usual — about +0.5 °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 short crop, and only if timed to it, warm all year, so nothing but rain ends the season |
| Ground this covers | 2 kinds of ground. The season below is one typical farming district's, not a figure for the whole of this area. |
| 88% | too dry for rain-fed cropping without irrigation; warm all year, so nothing but rain ends the season no rain-fed season · about 250 mm · July to October |
|---|---|
| 11% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 81 growing days · about 320 mm · July to October |
last updated 16 September 2026 · from all 3 areas within it
What mandarin needs to grow here
| Soil it likes | well-drained loam or sandy loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 6.0 and 6.5 |
| Spacing | 550 cm between rows, 550 cm between plants |
| Feed it most with | nitrogen, potassium, magnesium, zinc and boron |
What it takes to grow mandarin in Saint-Louis
| Planting material | About 340 plants per hectare |
|---|---|
| Nitrogen (N) | About 48 kg per hectare |
| Phosphate (P₂O₅) | About 10 kg per hectare |
| Potash (K₂O) | About 60 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 | 91–203 days per hectare, by hand |
These are the nutrients a mandarin 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 Mandarin with a plan, not a guess
Everything above describes Saint-Louis 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.
Mandarin 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 mandarin grow well in Saint-Louis?
Saint-Louis rates as favourable for mandarin.
When should I plant mandarin in Saint-Louis?
Typically 21 Jan 2026 to 1 Jan 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Saint-Louis, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
