Growing Lemongrass in Murang'a

Soil suitability analysis based on Murang'a's nutrient profile

Murang'a County is a solid choice for Lemongrass, with a soil-match score of 67/100. At an average pH of 5.03 the soil is moderately acidic, below Lemongrass's preferred 5.5–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.2 g/kg), phosphorus (12.2 mg/kg) and potassium (168 mg/kg) all meet Lemongrass's requirements, so a maintenance fertilizer programme is enough. Lemongrass prefers loam soils, while Murang'a is largely clay, so drainage and organic-matter management matter more here. Lemongrass's full potential is about 8,000 kg/acre (~KES 480,000/acre at KES 60/kg), but at Murang'a's 67/100 suitability a realistic target here is closer to 6,700 kg/acre (~KES 402,000/acre) unless the constraints above are addressed.

67Suitability score

Soil & climate match

FactorMurang'a soilLemongrass needsStatus
pH5.035.57.5Adjust
Nitrogen1.2 g/kgmin 0.8 g/kgOK
Phosphorus12.2 mg/kgmin 12 mg/kgOK
Potassium168 mg/kgmin 150 mg/kgOK
Rainfall1,200 mm700–1,800 mmOK
Altitude1,500 m0–2,000 mOK

Planting calendar

Long Rains

Month 1
Slip Planting & Basal
Month 2
Weeding & Top Dressing
Month 3
First Cutting

Short Rains

Month 1
Slip Planting & Basal
Month 2
Weeding & Top Dressing
Month 3
First Cutting

Top dressing guide

Product
CAN
Timing
Every 2 months
Instruction
Ratoon crop — top-dress each cutting cycle for continuous biomass.
Bags per Acre
0.4

Economics

Market priceKES 60/kg
Expected yield in Murang'a6,700 kg/acre
Estimated revenueKES 402,000/acre
Adjusted for Murang'a's 67/100 suitability. Under ideal conditions Lemongrass can reach 8,000 kg/acre (~KES 480,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureLoam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(4,500)
NPK 17:17:17
KES 3,275(5,600)
Urea
KES 3,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag