Growing Macadamia in Nairobi

Soil suitability analysis based on Nairobi's nutrient profile

Quick answer

Yes, with the right inputs — Nairobi is moderately suited to Macadamia. Nairobi's soil (pH 6.85, near-neutral) gives Macadamia a suitability score of 71/100. Match fertilizer to Nairobi's nitrogen and phosphorus levels for the best result.

Nairobi County is a solid choice for Macadamia, with a soil-match score of 71/100. At an average pH of 6.85 the soil sits above Macadamia's preferred 4.5–6.5 range, which can limit uptake of phosphorus and micronutrients. Nitrogen (1.1 g/kg), phosphorus (22.1 mg/kg) and potassium (236 mg/kg) all meet Macadamia's requirements, so a maintenance fertilizer programme is enough. The county's predominantly clay loam soils suit Macadamia, which favours loam. On ShambaIQ's soil-match model, Macadamia is the #79 soil match of the 106 crops we assess for Nairobi County. Macadamia's full potential is about 1,800 kg/acre (~KES 198,000/acre at KES 110/kg), but at Nairobi's 71/100 suitability a realistic target here is closer to 1,598 kg/acre (~KES 175,780/acre) unless the constraints above are addressed.

71Suitability score

Soil & climate match

FactorNairobi soilMacadamia needsStatus
pH6.854.5–6.5Adjust
Nitrogen1.1 g/kgmin 0.8 g/kgOK
Phosphorus22.1 mg/kgmin 12 mg/kgOK
Potassium236 mg/kgmin 150 mg/kgOK
Rainfall900 mm700–1,500 mmOK
Altitude1,700 m900–2,100 mOK

Planting calendar for Nairobi

Long Rains· March–MayMain season here

March
Fertilizer (NPK) & Weed Control
April
Flower & Nut-set Monitoring
May
Stink Bug Scouting & Pruning

Short Rains· October–December

October
Nut Development & Top Dressing
November
Pest Control (nut borer)
December
Harvest Mature Nut Fall

Dry Season· January–March

January
Harvest & Dehusking
February
Irrigation & Mulching
March
Formative & Sanitation Pruning

Top dressing guide

Product
CAN
Timing
Start of rains (biannual)
Instruction
Apply in ring around drip line. Young trees need less.
Bags per acre in Nairobi
0.5

Nairobi's nitrogen (1.1 g/kg) already meets Macadamia's 0.8 g/kg requirement, so this is a maintenance rate.

Seed varieties for Nairobi

3 macadamia varieties are rated for Nairobi's altitude (1,700 m) and rainfall (900 mm):

KRG 15· Medium/HighlandEmbu 1· Medium/HighlandEMB-3· Medium/Highland
Full variety details — maturity, yield & breeder →

Economics

Market priceKES 110/kg
Expected yield in Nairobi1,598 kg/acre
Estimated revenueKES 175,780/acre
Adjusted for Nairobi's 71/100 suitability. Under ideal conditions Macadamia can reach 1,800 kg/acre (~KES 198,000/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