Growing Pawpaw in Nairobi
Soil suitability analysis based on Nairobi's nutrient profile
Possible but challenging — Nairobi is only marginally suited to Pawpaw. Nairobi's soil (pH 6.85, near-neutral) gives Pawpaw a suitability score of 46/100. Match fertilizer to Nairobi's nitrogen and phosphorus levels for the best result.
Pawpaw can be grown in Nairobi County, but the soil scores 46/100 and needs targeted management to reach full potential. Local soils average pH 6.85 — neutral and inside the 6–7.5 band Pawpaw prefers, so no lime is usually required. The main gap is nitrogen — measured at N 1.1 g/kg, P 22.1 mg/kg, K 236 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing that deficit. Pawpaw prefers sandy loam soils, while Nairobi is largely clay loam, so drainage and organic-matter management matter more here. At 1700 m, the county sits above Pawpaw's preferred altitude ceiling of 1200 m, where frost risk and cold nights reduce the crop's productivity. On ShambaIQ's soil-match model, Pawpaw is the #97 soil match of the 106 crops we assess for Nairobi County. Pawpaw's full potential is about 12,000 kg/acre (~KES 336,000/acre at KES 28/kg), but at Nairobi's 46/100 suitability a realistic target here is closer to 6,900 kg/acre (~KES 193,200/acre) unless the constraints above are addressed.
Better matched to Nairobi's soil: Dhania, Pumpkin, and Rosemary — each scores higher on the same soil.
Soil & climate match
| Factor | Nairobi soil | Pawpaw needs | Status |
|---|---|---|---|
| pH | 6.85 | 6–7.5 | OK |
| Nitrogen | 1.1 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 22.1 mg/kg | min 12 mg/kg | OK |
| Potassium | 236 mg/kg | min 200 mg/kg | OK |
| Rainfall | 900 mm | 600–1,500 mm | OK |
| Altitude | 1,700 m | 0–1,200 m | High |
Top dressing guide
Nairobi's nitrogen (1.1 g/kg) is 92% of the 1.2 g/kg Pawpaw needs, so the standard 0.5 bags/acre is raised to 0.75. Split it across two applications to limit leaching.
Seed varieties for Nairobi
Varieties suited to Nairobi's 1,700 m altitude and 900 mm annual rainfall — 2 of 2 pawpaw varieties we list.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag