Which county is best for Sweet Potato farming in Kenya?

Based on soil and climate suitability analysis, the top counties for Sweet Potato are Kericho, Trans Nzoia, West Pokot. Scores combine soil pH, nitrogen, phosphorus, and potassium against Sweet Potato's nutrient requirements, plus a rainfall and altitude multiplier that penalises counties outside the crop's climate range.

What soil pH does Sweet Potato need?

Sweet Potato grows best between pH 4.5 and 7. Counties whose soils fall outside this range will need lime (if acidic) or sulphur (if alkaline) before planting.

What is the expected yield per acre for Sweet Potato in Kenya?

A well-managed Sweet Potato crop yields about 5,000 kg/acre. At a market price of approximately KES 18/kg, gross revenue per acre is around KES 90,000.

Best counties to grow Sweet Potato in Kenya

All 47 counties ranked by soil and climate suitability for Sweet Potato — scored against pH 4.5–7 target, low nitrogen, medium phosphorus, high potassium, plus rainfall (600–1800 mm) and altitude (0–2200 m) requirements.

Click any county to see the full fertilizer plan, planting calendar, and seed varieties.

Quick answer

The best counties for Sweet Potato in Kenya are Kericho, Trans Nzoia, West Pokot, based on soil and climate suitability. Sweet Potato grows best at pH 4.5–7; these rank highest across all 47 counties on ShambaIQ's soil scoring.