Growing Dragon Fruit in Nyandarua

Soil suitability analysis based on Nyandarua's nutrient profile

Nyandarua County is a challenging environment for Dragon Fruit (soil-match score 44/100) and will need significant amendment before planting. At an average pH of 5.38 the soil is moderately acidic, below Dragon Fruit's preferred 5.5–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is potassium — measured at N 1.28 g/kg, P 14 mg/kg, K 166 mg/kg against this crop's medium/medium/high demand — so the fertilizer plan below prioritises closing that deficit. Dragon Fruit prefers sandy loam soils, while Nyandarua is largely clay, so drainage and organic-matter management matter more here. At 2300 m, the county sits above Dragon Fruit's preferred altitude ceiling of 1700 m, where frost risk and cold nights reduce the crop's productivity. Dragon Fruit's full potential is about 5,000 kg/acre (~KES 2,500,000/acre at KES 500/kg), but at Nyandarua's 44/100 suitability a realistic target here is closer to 2,750 kg/acre (~KES 1,375,000/acre) unless the constraints above are addressed.