Divisi
When to plant Sweet potato in République démocratique du Congo
Known here as kiazi kitamu · viazi vitamu · patate douce
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 | 20 Jun 2027 – 29 Aug 2027 opens in 38 weeks | 30 Jun 2027 – 29 Aug 2027 |
| Expected harvest | about 21.9 t/ha | about 29.5 t/ha |
| Harvest | From 18 Sep 2027 to 26 Jan 2028, 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 20 Jun 2027. That is the point in the window where the rains are most reliably established.
No seasonal forecast reaches République démocratique du Congo yet, so these dates follow the rains it usually gets rather than this year's.
Planting after 29 Aug 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in République démocratique du Congo
| Rain and temperature | 96% |
|---|---|
| The soil | 76% |
| The lie of the land | 76% |
For sweet potato in République démocratique du Congo, 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 2025/26 season in République démocratique du Congo
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | September 2025 to May 2026 |
| Rain in a typical year | About 1,104 mm in a typical farming district |
| Across its districts | From about 826 mm in the driest of 164 districts to about 1,709 mm in the wettest |
| This season's rain | Leaning wet — January, February, October, November and December look heavier than usual. Make sure water can drain off the field; a wet year does more damage through waterlogging and disease than through the rain itself. |
| This season's heat | Hotter than usual — about +1.2 °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 one typical farming district's, not a figure for the whole of this area. |
| 60% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 347 growing days · about 1,450 mm · January to December |
|---|---|
| 21% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 235 growing days · about 1,070 mm · September to May |
| 8% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 278 growing days · about 1,300 mm · August to May |
| 5% | 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 1,310 mm · March to December |
last updated 16 September 2026 · from all 164 areas within it
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 République démocratique du Congo
| Planting material | About 33,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 88 kg per hectare |
| Phosphate (P₂O₅) | About 33 kg per hectare |
| Potash (K₂O) | About 175 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 République démocratique du Congo 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.
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 République démocratique du Congo?
République démocratique du Congo rates as favourable for sweet potato.
When should I plant sweet potato in République démocratique du Congo?
Typically 20 Jun 2027 to 29 Aug 2027, typical season.
Is this exact for my own field?
No — these are readings taken across République démocratique du Congo, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
