Question 1

Which county is best for Onion farming in Kenya?

Accepted Answer

Based on soil and climate suitability analysis, the top counties for Onion are Nakuru, Narok, Baringo. Scores combine soil pH, nitrogen, phosphorus, and potassium against Onion's nutrient requirements, plus a rainfall and altitude multiplier that penalises counties outside the crop's climate range.

Question 2

What soil pH does Onion need?

Accepted Answer

Onion grows best between pH 6 and 7. Counties whose soils fall outside this range will need lime (if acidic) or sulphur (if alkaline) before planting.

Question 3

What is the expected yield per acre for Onion in Kenya?

Accepted Answer

A well-managed Onion crop yields about 3,500 kg/acre. At a market price of approximately KES 45/kg, gross revenue per acre is around KES 157,500.

Best counties to grow Onion in Kenya

All 47 counties — Onion suitability ranking