Divisi
When to plant Fonio in Lagos Mainland
Lagos, Nigeria
Known here as acha
Fonio (Digitaria exilis) — also called acha, hungry rice, findi or fundi — is West Africa's ancient small grain and the fastest cereal in the world: early types give grain in about 70 to 85 days, some in as little as 6 to 8 weeks.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 9 Mar 2027 – 7 Sep 2027 opens in 23 weeks | 10 Feb 2026 – 7 Dec 2026 |
| Expected harvest | about 1.5 t/ha | same |
| Harvest | From 8 May 2027 to 5 Jan 2028, depending on the planting date | |
| Ready to harvest | 60–120 days after planting | |
| Work it takes | 82–175 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 22 Mar 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Lagos Mainland 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 7 Sep 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Lagos Mainland
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 88% |
For fonio in Lagos Mainland, the lie of the land is the tightest of the three at 88%. You cannot flatten it, but you can farm it: plant along the contour rather than up and down, ridge or tie ridges to hold water on the slope, and expect shallower rooting than the crop would manage on flat ground.
The 2026 season in Lagos Mainland
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | March 2026 to November 2026 |
| Rain in a typical year | About 1,388 mm |
| This season's rain | Leaning dry — September and October 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. |
| What that supports | enough rain for one full main crop, warm all year, so nothing but rain ends the season |
| Ground this covers | 2 kinds of ground. The season below is the largest that farms — about 50% of this area. |
| 50% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 294 growing days · about 1,410 mm · March to December |
|---|---|
| 50% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 264 growing days · about 1,390 mm · March to November |
last updated 16 September 2026
Frost and pest pressure hold back about 15% of yield here.
What fonio needs to grow here
| Soil it likes | well-drained sand or sandy loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.0 and 6.5 |
| Feed it most with | nitrogen and phosphorus |
What it takes to grow fonio in Lagos Mainland
| Nitrogen (N) | About 30 kg per hectare |
|---|---|
| Phosphate (P₂O₅) | About 9 kg per hectare |
| Potash (K₂O) | About 30 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 | 82–175 days per hectare, by hand |
These are the nutrients a fonio 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 Fonio with a plan, not a guess
Everything above describes Lagos Mainland 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.
Fonio 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 fonio grow well in Lagos Mainland?
Lagos Mainland rates as favourable for fonio.
When should I plant fonio in Lagos Mainland?
Typically 9 Mar 2027 to 7 Sep 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Lagos Mainland, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
