Divisi
When to plant Grapefruit in Kaskazini B
Kaskazini Unguja, United Republic of Tanzania
Known here as balungi
Grapefruit (Citrus paradisi) is a big, dense evergreen citrus tree you plant once and pick from for decades.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant (establish) | 8 Oct 2025 – 18 Sep 2026 closed for this season | 21 Jan 2026 – 1 Jan 2027 |
| Expected harvest | 20.3–22.3 t/ha | about 37.1 t/ha |
| Bearing cycle | 360–420 days per crop once the plant is established. Planting to the first harvest takes longer than one cycle. | |
| Work it takes | 74–148 days per hectare, by hand | |
| Rain meets its needs | 93% | |
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 18 Sep 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Kaskazini B is close to normal, so these dates match the pattern the area usually follows.
Planting after 18 Sep 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Kaskazini B
| Rain and temperature | 96% |
|---|---|
| The soil | 76% |
| The lie of the land | 88% |
For grapefruit in Kaskazini B, 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 season in Kaskazini B
| When the rains are expected | August 2025 to August 2025 |
|---|---|
| Rain in a typical year | About 1,555 mm |
| This season's rain | Rain close to usual — plan around about 1,555 mm falling roughly when it always does |
| What that supports | enough rain for a long crop, or two in a year, 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 a long crop, or two in a year; warm all year, so nothing but rain ends the season 363 growing days · about 1,580 mm · August to August |
|---|---|
| 10% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 341 growing days · about 1,460 mm · August to August |
last updated 16 September 2026
Frost and pest pressure hold back about 15% of yield here.
What grapefruit 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 | 650 cm between rows, 650 cm between plants |
| Feed it most with | nitrogen, potassium, magnesium, zinc and boron |
What it takes to grow grapefruit in Kaskazini B
| Planting material | About 240 plants per hectare |
|---|---|
| Nitrogen (N) | About 44 kg per hectare |
| Phosphate (P₂O₅) | About 9 kg per hectare |
| Potash (K₂O) | About 65 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 | 74–148 days per hectare, by hand |
These are the nutrients a grapefruit 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 Grapefruit with a plan, not a guess
Everything above describes Kaskazini B 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.
Grapefruit 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 grapefruit grow well in Kaskazini B?
Kaskazini B rates as favourable for grapefruit.
When should I plant grapefruit in Kaskazini B?
Typically 8 Oct 2025 to 18 Sep 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Kaskazini B, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
