Growing Leek in Kiambu

Soil suitability analysis based on Kiambu's nutrient profile

Kiambu County is a solid choice for Leek, with a soil-match score of 64/100. At an average pH of 5.28 the soil is moderately acidic, below Leek's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen and potassium — measured at N 1.01 g/kg, P 13.7 mg/kg, K 169 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing those deficits. Leek prefers loam soils, while Kiambu is largely clay, so drainage and organic-matter management matter more here. Leek's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Kiambu's 64/100 suitability a realistic target here is closer to 8,000 kg/acre (~KES 480,000/acre) unless the constraints above are addressed.