Divisi
When to plant Robusta coffee in Haraze Al Biar
HADJER LAMIS, Tchad
Robusta (Coffea canephora) is a hardy evergreen coffee tree of the warm lowlands — bigger, tougher and higher-yielding than highland Arabica, and far better at shrugging off leaf rust.
| Fit | Favourable |
|---|---|
| When to plant (establish) | 21 Jan 2026 – 1 Jan 2027 open now |
| Expected harvest | about 1.6 t/ha |
| Bearing cycle | 270–330 days per crop once the plant is established. Planting to the first harvest takes longer than one cycle. |
| Work it takes | 122–255 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 Haraze Al Biar is close to normal, so these dates match the pattern the area usually follows.
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 Haraze Al Biar
| Rain and temperature | 76% |
|---|---|
| The soil | 76% |
| The lie of the land | 96% |
For robusta coffee in Haraze Al Biar, rain and temperature is the tightest of the three at 76%. 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 2027 season in Haraze Al Biar
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | July 2027 to September 2027 |
| Rain in a typical year | About 343 mm |
| This season's rain | Rain close to usual — plan around about 343 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +1.8 °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 the largest that farms — about 90% of this area. |
| 90% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 91 growing days · about 360 mm · July to September |
|---|---|
| 10% | too dry for rain-fed cropping without irrigation; warm all year, so nothing but rain ends the season no rain-fed season · about 280 mm · July to September |
last updated 17 September 2026
Temperature holds back about 40% of yield here.
What robusta coffee needs to grow here
| Soil it likes | sandy loam, loam or clay loam |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.0 and 6.5 |
| Spacing | 275 cm between rows, 275 cm between plants |
| Feed it most with | potassium |
What it takes to grow robusta coffee in Haraze Al Biar
| Planting material | About 1,350 plants per hectare |
|---|---|
| Nitrogen (N) | About 56 kg per hectare |
| Phosphate (P₂O₅) | About 11 kg per hectare |
| Potash (K₂O) | About 62 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 | 122–255 days per hectare, by hand |
These are the nutrients a robusta coffee 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 Robusta coffee with a plan, not a guess
Everything above describes Haraze Al Biar 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.
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 robusta coffee grow well in Haraze Al Biar?
Haraze Al Biar rates as favourable for robusta coffee.
When should I plant robusta coffee in Haraze Al Biar?
Typically 21 Jan 2026 to 1 Jan 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Haraze Al Biar, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
