Growing Chilies in Nairobi

Soil suitability analysis based on Nairobi's nutrient profile

Chilies can be grown in Nairobi County, but the soil scores 47/100 and needs targeted management to reach full potential. Local soils average pH 6.85 — neutral and inside the 6–7.5 band Chilies prefers, so no lime is usually required. Nitrogen (1.1 g/kg), phosphorus (22.1 mg/kg) and potassium (236 mg/kg) all meet Chilies's requirements, so a maintenance fertilizer programme is enough. Chilies 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 Chilies's preferred altitude ceiling of 1200 m, where frost risk and cold nights reduce the crop's productivity. Chilies's full potential is about 2,500 kg/acre (~KES 412,500/acre at KES 165/kg), but at Nairobi's 47/100 suitability a realistic target here is closer to 1,469 kg/acre (~KES 242,385/acre) unless the constraints above are addressed.