Growing Eggplant in Mombasa

Soil suitability analysis based on Mombasa's nutrient profile

Quick answer

Generally not ideal — Mombasa is poorly suited to Eggplant. Mombasa's soil (pH 6.24, slightly acidic) gives Eggplant a suitability score of 1/100. Match fertilizer to Mombasa's nitrogen and phosphorus levels for the best result.

Mombasa County is a challenging environment for Eggplant (soil-match score 1/100) and will need significant amendment before planting. Local soils average pH 6.24 — slightly acidic to near-neutral and inside the 5.5–7 band Eggplant prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 0.95 g/kg, P 8.4 mg/kg, K 136 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing those deficits. Eggplant prefers loam soils, while Mombasa is largely sandy, so drainage and organic-matter management matter more here. At 50 m, the county sits below Eggplant's preferred altitude range (500–1800 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, Eggplant is the #65 soil match of the 106 crops we assess for Mombasa County. Eggplant's full potential is about 10,000 kg/acre (~KES 500,000/acre at KES 50/kg), but at Mombasa's 1/100 suitability a realistic target here is closer to 125 kg/acre (~KES 6,250/acre) unless the constraints above are addressed.

Better matched to Mombasa's soil: Finger Millet, Cashew Nuts, and Napier Grass — each scores higher on the same soil.

1Suitability score

Soil & climate match

FactorMombasa soilEggplant needsStatus
pH6.245.57OK
Nitrogen0.95 g/kgmin 1.2 g/kgLow
Phosphorus8.4 mg/kgmin 20 mg/kgLow
Potassium136 mg/kgmin 200 mg/kgLow
Rainfall1,000 mm600–1,200 mmOK
Altitude50 m500–1,800 mLow

Planting calendar

Long Rains

Month 1
Nursery Preparation & Transplanting & DAP Basal
Month 2
Staking & Top Dressing (CAN) & Pest Control
Month 3
Harvesting & Disease Management

Short Rains

Month 1
Nursery & Transplanting & Basal Fertilizer
Month 2
Top Dressing & Phomopsis Scouting
Month 3
Harvesting

Dry Season

Month 1
Irrigation & Continuous Harvesting
Month 2
Top Dressing & Pruning old plants
Month 3
Replanting & Land Preparation

Top dressing guide

Product
CAN
Timing
Week 3-4 then monthly
Instruction
Apply 3-4 weeks after transplanting and repeat monthly through fruiting; eggplant is a long-season heavy feeder
Bags per Acre
1.5

Recommended seed varieties

Black BeautyMedium/Highland
Simlaw Seeds · 75-90 days · 6–9 tons/acre
Large oval purple fruits; popular local and export; high yielding open-pollinated.
Ravaya (Long Purple)Medium
East Africa Seeds · 70-85 days · 6.5–10 tons/acre
Long slender purple fruits; export to UK and Middle East; continuous harvest.
Florida MarketMedium/Highland
Royal Seeds · 75-90 days · 5.5–8.5 tons/acre
Glossy dark fruits; firm flesh; good transport and shelf quality.

Economics

Market priceKES 50/kg
Expected yield in Mombasa125 kg/acre
Estimated revenueKES 6,250/acre
Adjusted for Mombasa's 1/100 suitability. Under ideal conditions Eggplant can reach 10,000 kg/acre (~KES 500,000/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(5,700)
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