Divisi
When to plant Cucumber in Gauteng
South Africa
Known here as komkommer
Cucumber is a fast, thirsty climbing vine grown for its crisp young fruit — picked small and often, before the seeds inside go hard.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 8 Dec 2026 – 26 Feb 2027 opens in 10 weeks | 9 Aug 2026 – 2 Mar 2027 |
| Expected harvest | about 17.1 t/ha | about 40.0 t/ha |
| Harvest | From 22 Jan 2027 to 7 May 2027, depending on the planting date | |
| Ready to harvest | 45–70 days after planting | |
| Work it takes | 120–247 days per hectare, by hand | |
| Rain meets its needs | 70% | |
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 16 Feb 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Gauteng 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 26 Feb 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Gauteng
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 88% |
For cucumber in Gauteng, the lie of the land is the tightest of the three at 88%. 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 Gauteng
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | October 2026 to April 2027 |
| Rain in a typical year | About 678 mm in a typical farming district |
| Across its districts | From about 618 mm in the driest of 5 districts to about 678 mm in the wettest |
| This season's rain | Leaning dry — January, February, November and December 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 +1.9 °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, with a cool spell that slows winter growth |
| Ground this covers | 4 kinds of ground. The season below is one typical farming district's, not a figure for the whole of this area. |
| 47% | enough rain for one full main crop; warm, with a cool spell that slows winter growth 194 growing days · about 650 mm · October to April |
|---|---|
| 29% | enough rain for one full main crop; warm, with a cool spell that slows winter growth 189 growing days · about 650 mm · October to April |
| 18% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 170 growing days · about 580 mm · October to April |
| 4% | enough rain for one full main crop; cool for part of the year, so frost sets the planting date 193 growing days · about 640 mm · October to April |
last updated 18 September 2026 · from all 5 areas within it
What cucumber needs to grow here
| Soil it likes | well-drained sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 6.0 and 6.8 |
| Rain it needs | About 1,000–1,200 mm across the season |
| Spacing | 150 cm between rows, 40 cm between plants |
| Feed it most with | nitrogen and potassium |
What it takes to grow cucumber in Gauteng
| Nitrogen (N) | About 31 kg per hectare |
|---|---|
| Phosphate (P₂O₅) | About 17 kg per hectare |
| Potash (K₂O) | About 51 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 | 120–247 days per hectare, by hand |
These are the nutrients a cucumber 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 Cucumber with a plan, not a guess
Everything above describes Gauteng 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.
Cucumber 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 cucumber grow well in Gauteng?
Gauteng rates as favourable for cucumber.
When should I plant cucumber in Gauteng?
Typically 8 Dec 2026 to 26 Feb 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Gauteng, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
