Divisi
When to plant Mandarin in Semienawi Keih Bahri
Eritrea
The mandarin (also called tangerine or naartjie) is the hardiest and easiest-to-peel of the citrus trees — a small, spreading evergreen that lives and bears fruit for decades.
| Fit | Favourable |
|---|---|
| When to plant (establish) | 21 Jan 2026 – 1 Jan 2027 open now |
| Expected harvest | about 22.4 t/ha |
| Work it takes | 91–203 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 Semienawi Keih Bahri 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 Semienawi Keih Bahri
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 18% |
For mandarin in Semienawi Keih Bahri, the lie of the land is the tightest of the three at 18%. 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 Semienawi Keih Bahri
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | November 2026 to February 2027 |
| Rain in a typical year | About 472 mm in a typical farming district |
| Across its districts | From about 176 mm in the driest of 10 districts to about 656 mm in the wettest |
| Rainy seasons, district by district | Of 10 districts: one rainy season in 3 and two rainy seasons in 1 |
| This season's rain | Rain close to usual — plan around about 472 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +1.0 °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 | 5 kinds of ground. The season below is one typical farming district's, not a figure for the whole of this area. |
| 72% | too dry for rain-fed cropping without irrigation; warm all year, so nothing but rain ends the season no rain-fed season · about 230 mm |
|---|---|
| 7% | enough rain for one short crop, and only if timed to it; warm all year, so nothing but rain ends the season 119 growing days · about 420 mm · November to February |
| 6% | too dry for rain-fed cropping without irrigation; warm all year, so nothing but rain ends the season no rain-fed season · about 180 mm |
| 6% | too dry for rain-fed cropping without irrigation; warm all year, so nothing but rain ends the season no rain-fed season · about 340 mm · July to September |
| 3% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 197 growing days · about 630 mm · October to March |
last updated 17 September 2026 · from all 10 areas within it
Sloping ground holds back about 30% of yield here.
What mandarin needs to grow here
| Soil it likes | well-drained loam or sandy loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 6.0 and 6.5 |
| Spacing | 550 cm between rows, 550 cm between plants |
| Feed it most with | nitrogen, potassium, magnesium, zinc and boron |
What it takes to grow mandarin in Semienawi Keih Bahri
| Planting material | About 340 plants per hectare |
|---|---|
| Nitrogen (N) | About 45 kg per hectare |
| Phosphate (P₂O₅) | About 9 kg per hectare |
| Potash (K₂O) | About 56 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 | 91–203 days per hectare, by hand |
These are the nutrients a mandarin 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 Mandarin with a plan, not a guess
Everything above describes Semienawi Keih Bahri 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 mandarin grow well in Semienawi Keih Bahri?
Semienawi Keih Bahri rates as favourable for mandarin.
When should I plant mandarin in Semienawi Keih Bahri?
Typically 21 Jan 2026 to 1 Jan 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Semienawi Keih Bahri, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
