Growing Cabbage in Lamu

Soil suitability analysis based on Lamu's nutrient profile

Lamu County is a challenging environment for Cabbage (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 5–7.5 band Cabbage 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/high/high demand — so the fertilizer plan below prioritises closing those deficits. Cabbage prefers clay loam soils, while Lamu is largely sandy, so drainage and organic-matter management matter more here. At 10 m, the county sits below Cabbage's preferred altitude range (800–2500 m), which limits yield potential due to heat stress. At current prices (about KES 12/kg) and a typical 10,000 kg/acre yield, a well-managed Cabbage crop here can gross roughly KES 120,000 per acre.

0Suitability score

Soil match analysis

NutrientLamu soilCabbage needsStatus
pH6.3157.5OK
Nitrogen0.74 g/kgmin 1.2 g/kgLow
Phosphorus9.6 mg/kgmin 20 mg/kgLow
Potassium117 mg/kgmin 200 mg/kgLow

Planting calendar

Long Rains

Month 1
Nursery & Transplanting & Basal Fertilizer
Month 2
Top Dressing & Caterpillar Control
Month 3
Head Formation & Pest Scouting

Short Rains

Month 1
Nursery & Transplanting
Month 2
Top Dressing & Pest Control
Month 3
Harvesting

Dry Season

Month 1
Irrigation-based Transplanting
Month 2
Top Dressing & Pest Management
Month 3
Harvesting & Land Preparation

Top dressing guide

Product
CAN
Timing
Week 3 and Week 6 after transplanting
Instruction
Split into 2 applications. Cabbage is a heavy N feeder.
Bags per Acre
1

Recommended seed varieties

Gloria F1Medium/Highland
East Africa Seeds · 70-85 days · 15–20 tons/acre
Compact heads; tolerant to black rot.
Copenhagen MarketMedium/Highland
Simlaw Seeds · 80-95 days · 12.5–17.5 tons/acre
Round heads; reliable open-pollinated variety.

Economics

Market priceKES 12/kg
Expected yield10,000 kg/acre
Estimated revenueKES 120,000/acre

Preferred textureClay Loam

Fertilizer prices

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

Green = subsidized · (Commercial) per 50kg bag