Growing Chia in Kiambu
Soil suitability analysis based on Kiambu's nutrient profile
Possible but challenging — Kiambu is only marginally suited to Chia. Kiambu's soil (pH 5.28, strongly acidic) gives Chia a suitability score of 52/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Chia can be grown in Kiambu County, but the soil scores 52/100 and needs targeted management to reach full potential. At an average pH of 5.28 the soil is moderately acidic, below Chia's preferred 6–8 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.01 g/kg), phosphorus (13.7 mg/kg) and potassium (169 mg/kg) all meet Chia's requirements, so a maintenance fertilizer programme is enough. Chia prefers sandy loam soils, while Kiambu is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Chia is the #85 soil match of the 106 crops we assess for Kiambu County. Chia's full potential is about 400 kg/acre (~KES 60,000/acre at KES 150/kg), but at Kiambu's 52/100 suitability a realistic target here is closer to 260 kg/acre (~KES 39,000/acre) unless the constraints above are addressed.
Better matched to Kiambu's soil: Macadamia, Avocado, and Pineapple — each scores higher on the same soil.
Soil & climate match
| Factor | Kiambu soil | Chia needs | Status |
|---|---|---|---|
| pH | 5.28 | 6–8 | Adjust |
| Nitrogen | 1.01 g/kg | min 0.5 g/kg | OK |
| Phosphorus | 13.7 mg/kg | min 12 mg/kg | OK |
| Potassium | 169 mg/kg | min 100 mg/kg | OK |
| Rainfall | 1,100 mm | 300–800 mm | High |
| Altitude | 1,700 m | 1,000–2,200 m | OK |
Planting calendar for Kiambu
Long Rains· March–MayMain season here
Short Rains· October–December
Top dressing guide
Kiambu's nitrogen (1.01 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