Growing Chia in Kwale
Soil suitability analysis based on Kwale's nutrient profile
Generally not ideal — Kwale is poorly suited to Chia. Kwale's soil (pH 6.76, near-neutral) gives Chia a suitability score of 3/100. Match fertilizer to Kwale's nitrogen and phosphorus levels for the best result.
Kwale County is a challenging environment for Chia (soil-match score 3/100) and will need significant amendment before planting. Local soils average pH 6.76 — neutral and inside the 6–8 band Chia prefers, so no lime is usually required. The main gap is phosphorus — measured at N 0.93 g/kg, P 9.8 mg/kg, K 131 mg/kg against this crop's low/medium/low demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit Chia, which favours sandy loam. At 200 m, the county sits below Chia's preferred altitude range (1000–2200 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, Chia is the #86 soil match of the 106 crops we assess for Kwale County. Chia's full potential is about 400 kg/acre (~KES 60,000/acre at KES 150/kg), but at Kwale's 3/100 suitability a realistic target here is closer to 15 kg/acre (~KES 2,250/acre) unless the constraints above are addressed.
Better matched to Kwale's soil: Dhania, Pigeon Peas, and Mango — each scores higher on the same soil.
Soil & climate match
| Factor | Kwale soil | Chia needs | Status |
|---|---|---|---|
| pH | 6.76 | 6–8 | OK |
| Nitrogen | 0.93 g/kg | min 0.5 g/kg | OK |
| Phosphorus | 9.8 mg/kg | min 12 mg/kg | Low |
| Potassium | 131 mg/kg | min 100 mg/kg | OK |
| Rainfall | 900 mm | 300–800 mm | High |
| Altitude | 200 m | 1,000–2,200 m | Low |
Planting calendar for Kwale
Long Rains· April–JuneMain season here
Short Rains· November–January
Top dressing guide
Kwale's nitrogen (0.93 g/kg) already meets Chia's 0.5 g/kg requirement, so this is a maintenance rate.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag