Growing Lettuce in Lamu

Soil suitability analysis based on Lamu's nutrient profile

Lamu County is a challenging environment for Lettuce (soil-match score 0/100) and will need significant amendment before planting. Local soils average pH 6.31 — slightly acidic to near-neutral and inside the 6–7 band Lettuce prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 0.74 g/kg, P 9.6 mg/kg, K 117 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing those deficits. Lettuce prefers loam soils, while Lamu is largely sandy, so drainage and organic-matter management matter more here. At 10 m, the county sits below Lettuce's preferred altitude range (800–2500 m), which limits yield potential due to heat stress. Lettuce's full potential is about 7,000 kg/acre (~KES 350,000/acre at KES 50/kg), but at Lamu's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/acre) unless the constraints above are addressed.