Growing Mint in Mombasa

Soil suitability analysis based on Mombasa's nutrient profile

Quick answer

Generally not ideal — Mombasa is poorly suited to Mint. Mombasa's soil (pH 6.24, slightly acidic) gives Mint 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 Mint (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 6–7.5 band Mint 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/medium/medium demand — so the fertilizer plan below prioritises closing those deficits. Mint prefers loam soils, while Mombasa is largely sandy, so drainage and organic-matter management matter more here. At 50 m, the county sits below Mint's preferred altitude range (500–2200 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, Mint is the #67 soil match of the 106 crops we assess for Mombasa County. Mint's full potential is about 4,000 kg/acre (~KES 400,000/acre at KES 100/kg), but at Mombasa's 1/100 suitability a realistic target here is closer to 50 kg/acre (~KES 5,000/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 soilMint needsStatus
pH6.2467.5OK
Nitrogen0.95 g/kgmin 1.2 g/kgLow
Phosphorus8.4 mg/kgmin 12 mg/kgLow
Potassium136 mg/kgmin 150 mg/kgLow
Rainfall1,000 mm700–1,400 mmOK
Altitude50 m500–2,200 mLow

Planting calendar for Mombasa

Long Rains· AprilJuneMain season here

April
Runner Planting & Basal
May
Weeding & Top Dressing
June
Continuous Harvest

Short Rains· NovemberJanuary

November
Runner Planting & Basal
December
Weeding & Top Dressing
January
Continuous Harvest

Top dressing guide

Product
CAN
Timing
Week 3 and after each cutting
Instruction
Top-dress after each cut for vigorous regrowth. Keep soil consistently moist.
Bags per acre in Mombasa
0.50.3

Mombasa's nitrogen (0.95 g/kg) is 79% of the 1.2 g/kg Mint needs, so the standard 0.3 bags/acre is raised to 0.5. Split it across two applications to limit leaching.

Economics

Market priceKES 100/kg
Expected yield in Mombasa50 kg/acre
Estimated revenueKES 5,000/acre
Adjusted for Mombasa's 1/100 suitability. Under ideal conditions Mint can reach 4,000 kg/acre (~KES 400,000/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