Growing Tree Tomato (Tamarillo) in Lamu

Soil suitability analysis based on Lamu's nutrient profile

Lamu County is a challenging environment for Tree Tomato (Tamarillo) (soil-match score 0/100) and will need significant amendment before planting. Local soils average pH 6.31 — slightly acidic to near-neutral and inside the 5.8–7 band Tree Tomato (Tamarillo) prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 0.74 g/kg, P 9.6 mg/kg, K 117 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing those deficits. Tree Tomato (Tamarillo) prefers loam soils, while Lamu is largely sandy, so drainage and organic-matter management matter more here. At 10 m, the county sits below Tree Tomato (Tamarillo)'s preferred altitude range (1500–2800 m), which limits yield potential due to heat stress. Tree Tomato (Tamarillo)'s full potential is about 8,000 kg/acre (~KES 640,000/acre at KES 80/kg), but at Lamu's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/acre) unless the constraints above are addressed.

0Suitability score

Soil & climate match

FactorLamu soilTree Tomato (Tamarillo) needsStatus
pH6.315.87OK
Nitrogen0.74 g/kgmin 1.2 g/kgLow
Phosphorus9.6 mg/kgmin 20 mg/kgLow
Potassium117 mg/kgmin 200 mg/kgLow
Rainfall600 mm800–1,800 mmLow
Altitude10 m1,500–2,800 mLow

Planting calendar

Long Rains

Month 1
Transplanting & Basal
Month 2
Staking & Top Dressing
Month 3
Fruit Development

Short Rains

Month 1
Transplanting & Basal
Month 2
Staking & Top Dressing
Month 3
Fruit Development

Top dressing guide

Product
CAN
Timing
Every 3 months
Instruction
Perennial — ring-apply around the drip line each quarter. Add NPK at flowering.
Bags per Acre
0.5

Economics

Market priceKES 80/kg
Expected yield in Lamu0 kg/acre
Estimated revenueKES 0/acre
Adjusted for Lamu's 0/100 suitability. Under ideal conditions Tree Tomato (Tamarillo) can reach 8,000 kg/acre (~KES 640,000/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(4,500)
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