Growing Sweet Potato in Nairobi

Soil suitability analysis based on Nairobi's nutrient profile

Nairobi County is well suited to Sweet Potato, scoring 77/100 on ShambaIQ's soil-match model. Local soils average pH 6.85 — neutral and inside the 4.5–7 band Sweet Potato prefers, so no lime is usually required. Nitrogen (1.1 g/kg), phosphorus (22.1 mg/kg) and potassium (236 mg/kg) all meet Sweet Potato's requirements, so a maintenance fertilizer programme is enough. Sweet Potato prefers sandy loam soils, while Nairobi is largely clay loam, so drainage and organic-matter management matter more here. At current prices (about KES 18/kg) and a typical 5,000 kg/acre yield, a well-managed Sweet Potato crop here can gross roughly KES 90,000 per acre.