Growing Dragon Fruit in Tharaka Nithi

Soil suitability analysis based on Tharaka Nithi's nutrient profile

Quick answer

Yes, with the right inputs — Tharaka Nithi is moderately suited to Dragon Fruit. Tharaka Nithi's soil (pH 4.99, strongly acidic) gives Dragon Fruit a suitability score of 73/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Tharaka Nithi County is a solid choice for Dragon Fruit, with a soil-match score of 73/100. At an average pH of 4.99 the soil is strongly acidic, below Dragon Fruit's preferred 5.5–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.23 g/kg), phosphorus (19.6 mg/kg) and potassium (211 mg/kg) all meet Dragon Fruit's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Dragon Fruit, which favours sandy loam. On ShambaIQ's soil-match model, Dragon Fruit is the #13 soil match of the 106 crops we assess for Tharaka Nithi County. At current prices (about KES 500/kg) and a typical 5,000 kg/acre yield, a well-managed Dragon Fruit crop here can gross roughly KES 2,500,000 per acre.

73Suitability score

Soil & climate match

FactorTharaka Nithi soilDragon Fruit needsStatus
pH4.995.5–7Adjust
Nitrogen1.23 g/kgmin 0.8 g/kgOK
Phosphorus19.6 mg/kgmin 12 mg/kgOK
Potassium211 mg/kgmin 200 mg/kgOK
Rainfall900 mm500–1,500 mmOK
Altitude1,100 m0–1,700 mOK

Planting calendar for Tharaka Nithi

Long Rains· March–MayMain season here

March
Planting Cuttings & Trellis Setup
April
Vegetative Growth & Weed Control
May
Flower Initiation

Short Rains· October–December

October
Flowering & Night Pollination
November
Fruit Development
December
Harvesting

Economics

Market priceKES 500/kg
Expected yield in Tharaka Nithi4,563 kg/acre
Estimated revenueKES 2,281,500/acre
Adjusted for Tharaka Nithi's 73/100 suitability. Under ideal conditions Dragon Fruit can reach 5,000 kg/acre (~KES 2,500,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy Loam

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