Growing French Beans in Mombasa
Soil suitability analysis based on Mombasa's nutrient profile
Generally not ideal — Mombasa is poorly suited to French Beans. Mombasa's soil (pH 6.24, slightly acidic) gives French Beans a suitability score of 0/100. Match fertilizer to Mombasa's nitrogen and phosphorus levels for the best result.
Mombasa County is a challenging environment for French Beans (soil-match score 0/100) and will need significant amendment before planting. Local soils average pH 6.24 — slightly acidic to near-neutral and inside the 5.8–7 band French Beans prefers, so no lime is usually required. The main gap is phosphorus and potassium — measured at N 0.95 g/kg, P 8.4 mg/kg, K 136 mg/kg against this crop's low/high/medium demand — so the fertilizer plan below prioritises closing those deficits. French Beans prefers loam soils, while Mombasa is largely sandy, so drainage and organic-matter management matter more here. At 50 m, the county sits below French Beans's preferred altitude range (1000–2100 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, French Beans is the #83 soil match of the 106 crops we assess for Mombasa County. French Beans's full potential is about 3,500 kg/acre (~KES 280,000/acre at KES 80/kg), but at Mombasa's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/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.
Soil & climate match
| Factor | Mombasa soil | French Beans needs | Status |
|---|---|---|---|
| pH | 6.24 | 5.8–7 | OK |
| Nitrogen | 0.95 g/kg | min 0.5 g/kg | OK |
| Phosphorus | 8.4 mg/kg | min 20 mg/kg | Low |
| Potassium | 136 mg/kg | min 150 mg/kg | Low |
| Rainfall | 1,000 mm | 900–1,500 mm | OK |
| Altitude | 50 m | 1,000–2,100 m | Low |
Planting calendar
Long Rains
Short Rains
Dry Season
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag