Growing Tea in Tharaka Nithi
Soil suitability analysis based on Tharaka Nithi's nutrient profile
Generally not ideal — Tharaka Nithi is poorly suited to Tea. Tharaka Nithi's soil (pH 4.99, strongly acidic) gives Tea a suitability score of 33/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Tharaka Nithi County is a challenging environment for Tea (soil-match score 33/100) and will need significant amendment before planting. Local soils average pH 4.99 — strongly acidic and inside the 4.5–6 band Tea prefers, so no lime is usually required. Nitrogen (1.23 g/kg), phosphorus (19.6 mg/kg) and potassium (211 mg/kg) all meet Tea's requirements, so a maintenance fertilizer programme is enough. Tea prefers clay soils, while Tharaka Nithi is largely sandy loam, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Tea is the #95 soil match of the 106 crops we assess for Tharaka Nithi County. Tea's full potential is about 2,200 kg/acre (~KES 55,000/acre at KES 25/kg), but at Tharaka Nithi's 33/100 suitability a realistic target here is closer to 908 kg/acre (~KES 22,700/acre) unless the constraints above are addressed.
Better matched to Tharaka Nithi's soil: Avocado, Macadamia, and Cassava — each scores higher on the same soil.
Soil & climate match
| Factor | Tharaka Nithi soil | Tea needs | Status |
|---|---|---|---|
| pH | 4.99 | 4.5–6 | OK |
| Nitrogen | 1.23 g/kg | min 1.2 g/kg | OK |
| Phosphorus | 19.6 mg/kg | min 12 mg/kg | OK |
| Potassium | 211 mg/kg | min 150 mg/kg | OK |
| Rainfall | 900 mm | 1,100–2,500 mm | Low |
| Altitude | 1,100 m | 1,500–3,000 m | Low |
Planting calendar for Tharaka Nithi
Long Rains· March–MayMain season here
Short Rains· October–December
Dry Season· January–March
Top dressing guide
Tharaka Nithi's nitrogen (1.23 g/kg) already meets Tea's 1.2 g/kg requirement, so this is a maintenance rate.
Recommended seed varieties
No variety in our list is specifically rated for Tharaka Nithi's 1,100 m altitude and 900 mm rainfall, so all 2 are shown. Confirm with your agrovet before buying.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag