Divisi
When to plant Sweet potato in Mulanje
Southern, Malawi
Known here as mbatata
Sweet potato is a trailing vine you grow from vine cuttings (slips), not from seed and not by planting the root.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 9 Feb 2027 – 19 Feb 2027 opens in 19 weeks | same |
| Expected harvest | about 25.0 t/ha | about 35.0 t/ha |
| Harvest | From 10 May 2027 to 19 Jul 2027, depending on the planting date | |
| Ready to harvest | 90–150 days after planting | |
| Work it takes | 70–148 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 9 Feb 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Mulanje 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 19 Feb 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Mulanje
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 96% |
For sweet potato in Mulanje, rain and temperature is the tightest of the three at 96%. 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 2026/27 season in Mulanje
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | November 2026 to June 2027 |
| Rain in a typical year | About 1,069 mm |
| This season's rain | Leaning dry — January, February and December look 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 +1.6 °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 full main crop, 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 43% of this area. |
| 43% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 219 growing days · about 1,160 mm · October to June |
|---|---|
| 35% | 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 1,630 mm · October to August |
| 11% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 295 growing days · about 1,720 mm · October to August |
| 7% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 316 growing days · about 1,770 mm · October to September |
last updated 17 September 2026
Frost and pest pressure hold back about 15% of yield here.
What sweet potato needs to grow here
| Soil it likes | well-drained sandy, sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.0 and 6.5 |
| Rain it needs | About 750–1,000 mm across the season |
| Spacing | 100 cm between rows, 30 cm between plants |
| Feed it most with | potassium and nitrogen |
What it takes to grow sweet potato in Mulanje
| Planting material | About 33,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 100 kg per hectare |
| Phosphate (P₂O₅) | About 38 kg per hectare |
| Potash (K₂O) | About 200 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 | 70–148 days per hectare, by hand |
These are the nutrients a sweet potato 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 Sweet potato with a plan, not a guess
Everything above describes Mulanje 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.
Where to sell Sweet potato nearby
Sweet potato 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 sweet potato grow well in Mulanje?
Mulanje rates as favourable for sweet potato.
When should I plant sweet potato in Mulanje?
Typically 9 Feb 2027 to 19 Feb 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Mulanje, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
