Growing Watermelon in Nakuru

Soil suitability analysis based on Nakuru's nutrient profile

Quick answer

Yes, with the right inputs — Nakuru is moderately suited to Watermelon. Nakuru's soil (pH 6.28, slightly acidic) gives Watermelon a suitability score of 57/100. Match fertilizer to Nakuru's nitrogen and phosphorus levels for the best result.

Watermelon can be grown in Nakuru County, but the soil scores 57/100 and needs targeted management to reach full potential. Local soils average pH 6.28 — slightly acidic to near-neutral and inside the 6–7.5 band Watermelon prefers, so no lime is usually required. Nitrogen (1.59 g/kg), phosphorus (25.2 mg/kg) and potassium (239 mg/kg) all meet Watermelon's requirements, so a maintenance fertilizer programme is enough. Watermelon prefers sandy soils, while Nakuru is largely clay loam, so drainage and organic-matter management matter more here. Watermelon's full potential is about 15,000 kg/acre (~KES 150,000/acre at KES 10/kg), but at Nakuru's 57/100 suitability a realistic target here is closer to 10,688 kg/acre (~KES 106,880/acre) unless the constraints above are addressed.

57Suitability score

Soil & climate match

FactorNakuru soilWatermelon needsStatus
pH6.2867.5OK
Nitrogen1.59 g/kgmin 0.8 g/kgOK
Phosphorus25.2 mg/kgmin 12 mg/kgOK
Potassium239 mg/kgmin 150 mg/kgOK
Rainfall900 mm300–700 mmHigh
Altitude1,750 m0–1,500 mHigh

Top dressing guide

Product
CAN
Timing
Week 3-4 after transplanting
Instruction
Apply at vine development stage. Stop nitrogen at flowering — excess N promotes leaves over fruits.
Bags per Acre
0.5

Recommended seed varieties

Sugar BabyDryland/Medium
Simlaw Seeds · 75-90 days · 5–7.5 tons/acre
Small round fruits; sweet red flesh; popular local market.
Charleston GreyMedium
Simlaw Seeds · 80-95 days · 6–9 tons/acre
Large oblong fruits; excellent taste; high yield.

Economics

Market priceKES 10/kg
Expected yield in Nakuru10,688 kg/acre
Estimated revenueKES 106,880/acre
Adjusted for Nakuru's 57/100 suitability. Under ideal conditions Watermelon can reach 15,000 kg/acre (~KES 150,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy

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