Growing Rosemary in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Rosemary can be grown in Isiolo County, but the soil scores 55/100 and needs targeted management to reach full potential. Local soils average pH 7.83 — alkaline and inside the 6–8 band Rosemary prefers, so no lime is usually required. The main gap is nitrogen — measured at N 0.46 g/kg, P 37.4 mg/kg, K 395 mg/kg against this crop's medium/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy soils suit Rosemary, which favours sandy loam. Rosemary's full potential is about 2,500 kg/acre (~KES 375,000/acre at KES 150/kg), but at Isiolo's 55/100 suitability a realistic target here is closer to 1,719 kg/acre (~KES 257,850/acre) unless the constraints above are addressed.