Divisi
When to plant Roselle in Rehoboth Urban West
Hardap, Namibia
Roselle — you may know it as bissap, zobo, karkade or sorrel — is a tall, warm-season hibiscus grown for the fleshy red cups (the calyces) that swell at the base of each flower once the petals drop.
| Fit | Favourable |
|---|---|
| When to plant | 29 Aug 2026 – 17 Nov 2026 open now |
| Expected harvest | about 1.5 t/ha |
| Harvest | From 27 Dec 2026 to 16 May 2027, depending on the planting date |
| Ready to harvest | 120–180 days after planting |
| Work it takes | 85–175 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 8 Oct 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Rehoboth Urban West is close to normal, so these dates match the pattern the area usually follows.
Planting after 17 Nov 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Rehoboth Urban West
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 96% |
For roselle in Rehoboth Urban West, rain and temperature is the tightest of the three at 96%. 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 season in Rehoboth Urban West
| Rain in a typical year | About 285 mm |
|---|---|
| This season's rain | Rain close to usual — plan around about 285 mm falling roughly when it always does |
| What that supports | too dry for rain-fed cropping without irrigation, 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 81% of this area. |
| 81% | 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 |
|---|---|
| 19% | too dry for rain-fed cropping without irrigation; warm all year, so nothing but rain ends the season no rain-fed season · about 290 mm |
last updated 17 September 2026
Frost and pest pressure hold back about 15% of yield here.
What roselle needs to grow here
| Soil it likes | well-drained sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.5 and 7.5 |
| Spacing | 80 cm between rows, 60 cm between plants |
| Feed it most with | nitrogen, phosphorus and potassium |
What it takes to grow roselle in Rehoboth Urban West
| Nitrogen (N) | About 60 kg per hectare |
|---|---|
| Phosphate (P₂O₅) | About 22 kg per hectare |
| Potash (K₂O) | About 82 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 | 85–175 days per hectare, by hand |
These are the nutrients a roselle 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 Roselle with a plan, not a guess
Everything above describes Rehoboth Urban West 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 roselle grow well in Rehoboth Urban West?
Rehoboth Urban West rates as favourable for roselle.
When should I plant roselle in Rehoboth Urban West?
Typically 29 Aug 2026 to 17 Nov 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Rehoboth Urban West, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.