Growing Basil in Lamu

Soil suitability analysis based on Lamu's nutrient profile

Lamu County is well suited to Basil, scoring 78/100 on ShambaIQ's soil-match model. Local soils average pH 6.31 — slightly acidic to near-neutral and inside the 6–7.5 band Basil 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. Basil prefers loam soils, while Lamu is largely sandy, so drainage and organic-matter management matter more here. At current prices (about KES 120/kg) and a typical 4,000 kg/acre yield, a well-managed Basil crop here can gross roughly KES 480,000 per acre.

78Suitability score

Soil & climate match

FactorLamu soilBasil needsStatus
pH6.3167.5OK
Nitrogen0.74 g/kgmin 1.2 g/kgLow
Phosphorus9.6 mg/kgmin 12 mg/kgLow
Potassium117 mg/kgmin 150 mg/kgLow
Rainfall600 mm600–1,200 mmOK
Altitude10 m0–2,100 mOK

Planting calendar

Long Rains

Month 1
Nursery & Transplanting
Month 2
Top Dressing & Pinching
Month 3
Continuous Harvest

Short Rains

Month 1
Direct Sowing & Basal
Month 2
Pinching & Top Dressing
Month 3
Continuous Harvest

Top dressing guide

Product
CAN
Timing
Week 3 and after each cutting
Instruction
Top-dress after each harvest to sustain leafy regrowth. Excess nitrogen dilutes the aroma.
Bags per Acre
0.3

Economics

Market priceKES 120/kg
Expected yield in Lamu3,900 kg/acre
Estimated revenueKES 468,000/acre
Adjusted for Lamu's 78/100 suitability. Under ideal conditions Basil can reach 4,000 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