Divisi
When to plant Watermelon in Ourmes
El Oued, Algeria
Watermelon is a warm-season trailing vine, grown flat along the ground for its big, sweet, thirst-quenching fruit — a cousin of pumpkin, cucumber and melon.
| Fit | Favourable |
|---|---|
| When to plant | 22 Mar 2027 – 31 Mar 2027 opens in 25 weeks |
| Expected harvest | about 46.3 t/ha |
| Harvest | From 10 Jun 2027 to 19 Jul 2027, depending on the planting date |
| Ready to harvest | 80–110 days after planting |
| Work it takes | 46–96 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 22 Mar 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Ourmes is close to normal, so these dates match the pattern the area usually follows.
Planting after 31 Mar 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Ourmes
| Rain and temperature | 96% |
|---|---|
| The soil | 76% |
| The lie of the land | 88% |
For watermelon in Ourmes, 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 season in Ourmes
| Rain in a typical year | About 57 mm |
|---|---|
| This season's rain | Rain close to usual — plan around about 57 mm falling roughly when it always does |
| What that supports | too dry for rain-fed cropping without irrigation, warm, with a cool spell that slows winter growth |
| Ground this covers | 2 kinds of ground. The season below is the largest that farms — about 92% of this area. |
| 92% | too dry for rain-fed cropping without irrigation; warm, with a cool spell that slows winter growth no rain-fed season · about 60 mm |
|---|---|
| 8% | too dry for rain-fed cropping without irrigation; warm, with a cool spell that slows winter growth no rain-fed season · about 60 mm |
last updated 18 September 2026
Frost and pest pressure hold back about 15% of yield here.
What watermelon needs to grow here
| Soil it likes | well-drained sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 6.0 and 7.0 |
| Spacing | 240 cm between rows, 140 cm between plants |
| Feed it most with | potassium, boron and calcium |
What it takes to grow watermelon in Ourmes
| Planting material | About 4,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 102 kg per hectare |
| Phosphate (P₂O₅) | About 28 kg per hectare |
| Potash (K₂O) | About 148 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 | 46–96 days per hectare, by hand |
These are the nutrients a watermelon 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 Watermelon with a plan, not a guess
Everything above describes Ourmes 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 watermelon grow well in Ourmes?
Ourmes rates as favourable for watermelon.
When should I plant watermelon in Ourmes?
Typically 22 Mar 2027 to 31 Mar 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Ourmes, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.