Divisi
When to plant Lime in Namtumbo
Ruvuma, United Republic of Tanzania
Known here as ndimu
The lime is a small, thorny, evergreen citrus tree — the most heat-loving and least cold-hardy of the whole citrus family.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant (establish) | 1 Nov 2026 – 1 Mar 2027 opens in 4 weeks | 21 Jan 2026 – 1 Jan 2027 |
| Expected harvest | about 16.3 t/ha | about 23.2 t/ha |
| Work it takes | 96–203 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 10 Jan 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Namtumbo 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 1 Mar 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Namtumbo
| Rain and temperature | 96% |
|---|---|
| The soil | 76% |
| The lie of the land | 60% |
For lime in Namtumbo, 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 Namtumbo
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | November 2026 to June 2027 |
| Rain in a typical year | About 1,142 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 +1.3 °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 | One kind of ground throughout. |
last updated 16 September 2026
Frost and pest pressure hold back about 15% of yield here.
What lime 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 lime in Namtumbo
| Planting material | About 340 plants per hectare |
|---|---|
| Nitrogen (N) | About 33 kg per hectare |
| Phosphate (P₂O₅) | About 7 kg per hectare |
| Potash (K₂O) | About 41 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 | 96–203 days per hectare, by hand |
These are the nutrients a lime 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 Lime with a plan, not a guess
Everything above describes Namtumbo 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.
Lime 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 lime grow well in Namtumbo?
Namtumbo rates as favourable for lime.
When should I plant lime in Namtumbo?
Typically 1 Nov 2026 to 1 Mar 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Namtumbo, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
