Divisi
When to plant Garlic in Arivonimamo
Itasy, Madagascar
Garlic (Allium sativum) is grown for its compound bulb — the head that splits into the cloves you cook with.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 29 Dec 2026 – 18 Jan 2027 opens in 13 weeks | 2 Mar 2027 – 20 Jul 2027 |
| Expected harvest | about 7.8 t/ha | about 14.0 t/ha |
| Harvest | From 28 Apr 2027 to 16 Aug 2027, depending on the planting date | |
| Ready to harvest | 120–210 days after planting | |
| Work it takes | 123–248 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 29 Dec 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Arivonimamo 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 18 Jan 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Arivonimamo
| Rain and temperature | 96% |
|---|---|
| The soil | 76% |
| The lie of the land | 60% |
For garlic in Arivonimamo, the lie of the land is the tightest of the three at 60%. 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 2026/27 season in Arivonimamo
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | October 2026 to April 2027 |
| Rain in a typical year | About 1,349 mm |
| This season's rain | Leaning dry — January and February 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 +1.2 °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 | 3 kinds of ground. The season below is the largest that farms — about 63% of this area. |
| 63% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 193 growing days · about 1,280 mm · October to May |
|---|---|
| 29% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 242 growing days · about 1,470 mm · October to June |
| 4% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 197 growing days · about 1,300 mm · October to May |
last updated 17 September 2026
Sloping ground holds back about 20% of yield here.
What garlic needs to grow here
| Soil it likes | well-drained sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 6.5 and 7.5 |
| Spacing | 30 cm between rows, 10 cm between plants |
| Feed it most with | sulphur, nitrogen and potassium |
What it takes to grow garlic in Arivonimamo
| Nitrogen (N) | About 78 kg per hectare |
|---|---|
| Phosphate (P₂O₅) | About 31 kg per hectare |
| Potash (K₂O) | About 78 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 | 123–248 days per hectare, by hand |
These are the nutrients a garlic 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 Garlic with a plan, not a guess
Everything above describes Arivonimamo 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.
Garlic 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 garlic grow well in Arivonimamo?
Arivonimamo rates as favourable for garlic.
When should I plant garlic in Arivonimamo?
Typically 29 Dec 2026 to 18 Jan 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Arivonimamo, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
