Growing Pawpaw in Nairobi

Soil suitability analysis based on Nairobi's nutrient profile

Pawpaw can be grown in Nairobi County, but the soil scores 46/100 and needs targeted management to reach full potential. Local soils average pH 6.85 — neutral and inside the 6–7.5 band Pawpaw prefers, so no lime is usually required. The main gap is nitrogen — measured at N 1.1 g/kg, P 22.1 mg/kg, K 236 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing that deficit. Pawpaw prefers sandy loam soils, while Nairobi is largely clay loam, so drainage and organic-matter management matter more here. At 1700 m, the county sits above Pawpaw's preferred altitude ceiling of 1200 m, where frost risk and cold nights reduce the crop's productivity. Pawpaw's full potential is about 12,000 kg/acre (~KES 336,000/acre at KES 28/kg), but at Nairobi's 46/100 suitability a realistic target here is closer to 6,900 kg/acre (~KES 193,200/acre) unless the constraints above are addressed.