Macadamia farming guide — Kenya

Soil requirements

Growing conditions for Macadamia

Macadamia does best with 700–1,500 mm of rainfall a year at 900–2,100 m above sea level. In drier areas, irrigation or water harvesting closes the gap; outside the altitude band, growth and yields drop.

Optimizing soil and fertilizers for Macadamia in Kenya

To achieve maximum yields when farming macadamia in Kenya, managing soil suitability is crucial. This crop performs best within a soil pH range of 4.5 to 6.5. Soils that fall outside this range can lock out essential macro and micro-nutrients, leading to stunted growth or crop failure. For acidic soils, applying dolomitic or calcitic agricultural lime is recommended at least 30 days before planting to normalize acidity.

Fertilizer application should be calibrated based on the crop’s nutrient demands. Macadamia has a medium nitrogen requirement, medium phosphorus requirement, and medium potassium demand. Using certified seed varieties suited for your specific altitude and rainfall pattern, combined with a precise basal and top-dressing program (such as applying CAN at Start of rains (biannual)), ensures high crop quality and protects your overall farm investment.

How to grow macadamia in Kenya

1. 1
   Prepare the soil

   Ensure soil pH is between 4.5 and 6.5. Preferred texture: Loam. Apply agricultural lime if your pH is below 4.5, ideally 30 days before planting.
2. 2
   Plant at the right time

   Plant macadamia during Long Rains (Fertilizer (NPK) & Weed Control–Stink Bug Scouting & Pruning) or Short Rains (Nut Development & Top Dressing–Harvest Mature Nut Fall) or Dry Season (Harvest & Dehusking–Formative & Sanitation Pruning), timed to the start of the rains.
3. 3
   Apply basal fertilizer

   Macadamia needs medium nitrogen, medium phosphorus, and medium potassium. Apply a balanced basal fertilizer such as DAP or NPK at planting.
4. 4
   Top-dress

   At Start of rains (biannual), apply 0.5 bag(s) per acre of CAN. Apply in ring around drip line. Young trees need less.
5. 5
   Monitor and harvest

   Scout regularly for pests and disease. Expected yield is about 1,800 kg/acre at roughly KES 110/kg.

Best counties for Macadamia

Challenging counties for Macadamia

These counties may need soil amendments for Macadamia

Certified seed varieties

Planting calendar

Establishment timeline

Macadamia is a perennial — it takes ~5 years to first harvest before your first crop, then yields for many years. Here is what each stage involves.

1. Year 0 — Planting · Long rains

   Plant grafted seedlings 8 × 8 m in large holes with manure + phosphate; stake and water in.

2. Years 1–2 — Vegetative

   Formative prune to a single leader, keep a weed-free ring, mulch, irrigate in dry spells. No nuts yet.

3. Years 3–4 — Early bearing

   First flowering and light nut set; apply NPK + potassium, scout for stink/nut borer bug.

4. Year 5 — First real harvest

   First commercial nut fall; collect fallen nuts promptly, de-husk and dry.