Growing Watermelon in Nairobi
Soil suitability analysis based on Nairobi's nutrient profile
Yes, with the right inputs — Nairobi is moderately suited to Watermelon. Nairobi's soil (pH 6.85, near-neutral) gives Watermelon a suitability score of 62/100. Match fertilizer to Nairobi's nitrogen and phosphorus levels for the best result.
Nairobi County is a solid choice for Watermelon, with a soil-match score of 62/100. Local soils average pH 6.85 — neutral and inside the 6–7.5 band Watermelon prefers, so no lime is usually required. Nitrogen (1.1 g/kg), phosphorus (22.1 mg/kg) and potassium (236 mg/kg) all meet Watermelon's requirements, so a maintenance fertilizer programme is enough. Watermelon prefers sandy soils, while Nairobi is largely clay loam, so drainage and organic-matter management matter more here. Watermelon's full potential is about 15,000 kg/acre (~KES 150,000/acre at KES 10/kg), but at Nairobi's 62/100 suitability a realistic target here is closer to 11,625 kg/acre (~KES 116,250/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Nairobi soil | Watermelon needs | Status |
|---|---|---|---|
| pH | 6.85 | 6–7.5 | OK |
| Nitrogen | 1.1 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 22.1 mg/kg | min 12 mg/kg | OK |
| Potassium | 236 mg/kg | min 150 mg/kg | OK |
| Rainfall | 900 mm | 300–700 mm | High |
| Altitude | 1,700 m | 0–1,500 m | High |
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag