Growing African Nightshade in Nairobi

Soil suitability analysis based on Nairobi's nutrient profile

Quick answer

Yes — Nairobi is well suited to African Nightshade. Nairobi's soil (pH 6.85, near-neutral) gives African Nightshade 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 African Nightshade, scoring 90/100 on ShambaIQ's soil-match model. Local soils average pH 6.85 — neutral and inside the 5.5–7.5 band African Nightshade 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 African Nightshade, which favours loam. On ShambaIQ's soil-match model, African Nightshade is the #24 soil match of the 106 crops we assess for Nairobi County. At current prices (about KES 50/kg) and a typical 5,000 kg/acre yield, a well-managed African Nightshade crop here can gross roughly KES 250,000 per acre.

90Suitability score

Soil & climate match

FactorNairobi soilAfrican Nightshade needsStatus
pH6.855.57.5OK
Nitrogen1.1 g/kgmin 1.2 g/kgLow
Phosphorus22.1 mg/kgmin 12 mg/kgOK
Potassium236 mg/kgmin 150 mg/kgOK
Rainfall900 mm800–1,500 mmOK
Altitude1,700 m1,000–2,200 mOK

Planting calendar

Long Rains

Month 1
Transplanting & Basal Fertilizer (DAP)
Month 2
First Harvest (leaf picking) & Top Dressing
Month 3
Continuous Leaf Harvest

Short Rains

Month 1
Transplanting & Basal Fertilizer
Month 2
Weeding & Pest Control
Month 3
Harvesting & Market

Dry Season

Month 1
Irrigation & Continuous Harvesting
Month 2
Top Dressing (CAN) every 2 weeks
Month 3
Replanting if stand is old

Top dressing guide

Product
CAN
Timing
Week 2-3 after transplanting
Instruction
Top dress 2-3 weeks after transplanting and after each picking to push tender leaf regrowth
Bags per Acre
1

Recommended seed varieties

Managu KALROMedium/Highland
KALRO · 30-45 days · 2.5–4 tons/acre
Indigenous leafy vegetable; high iron and vitamin A; multiple harvests; very popular in Western Kenya.
Giant NightshadeMedium/Highland
Simlaw Seeds · 35-50 days · 2.8–4.3 tons/acre
Large-leaved selection; soft palatable leaves; high market demand.
OlevolosiMedium
KALRO · 30-45 days · 2.3–3.8 tons/acre
Broad-leaf type; slow bolting; continuous picking; drought tolerant.

Economics

Market priceKES 50/kg
Expected yield 5,000 kg/acre
Estimated revenueKES 250,000/acre

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