Growing Amaranth in Nairobi
Soil suitability analysis based on Nairobi's nutrient profile
Yes — Nairobi is well suited to Amaranth. Nairobi's soil (pH 6.85, near-neutral) gives Amaranth a suitability score of 90/100. Match fertilizer to Nairobi's nitrogen and phosphorus levels for the best result.
Nairobi County is well suited to Amaranth, scoring 90/100 on ShambaIQ's soil-match model. Local soils average pH 6.85 — neutral and inside the 5.5–7.5 band Amaranth 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/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly clay loam soils suit Amaranth, which favours loam. On ShambaIQ's soil-match model, Amaranth is the #23 soil match of the 106 crops we assess for Nairobi County. At current prices (about KES 40/kg) and a typical 5,000 kg/acre yield, a well-managed Amaranth crop here can gross roughly KES 200,000 per acre.
Soil & climate match
| Factor | Nairobi soil | Amaranth needs | Status |
|---|---|---|---|
| pH | 6.85 | 5.5–7.5 | 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 150 mg/kg | OK |
| Rainfall | 900 mm | 500–1,500 mm | OK |
| Altitude | 1,700 m | 0–2,400 m | OK |
Planting calendar for Nairobi
Long Rains· March–MayMain season here
Short Rains· October–December
Dry Season· January–March
Top dressing guide
Nairobi's nitrogen (1.1 g/kg) is 92% of the 1.2 g/kg Amaranth needs, so the standard 1 bag/acre is raised to 1.25. Split it across two applications to limit leaching.
Seed varieties for Nairobi
7 amaranth varieties are rated for Nairobi's altitude (1,700 m) and rainfall (900 mm):
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag