Growing Sunflower in Meru
Soil suitability analysis based on Meru's nutrient profile
Generally not ideal — Meru is poorly suited to Sunflower. Meru's soil (pH 4.88, strongly acidic) gives Sunflower a suitability score of 39/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Meru County is a challenging environment for Sunflower (soil-match score 39/100) and will need significant amendment before planting. At an average pH of 4.88 the soil is strongly acidic, below Sunflower's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.22 g/kg), phosphorus (20.3 mg/kg) and potassium (218 mg/kg) all meet Sunflower's requirements, so a maintenance fertilizer programme is enough. Sunflower prefers sandy soils, while Meru is largely clay loam, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Sunflower is the #87 soil match of the 106 crops we assess for Meru County. Sunflower's full potential is about 750 kg/acre (~KES 36,000/acre at KES 48/kg), but at Meru's 39/100 suitability a realistic target here is closer to 366 kg/acre (~KES 17,568/acre) unless the constraints above are addressed.
Better matched to Meru's soil: Tea, Avocado, and Macadamia — each scores higher on the same soil.
Soil & climate match
| Factor | Meru soil | Sunflower needs | Status |
|---|---|---|---|
| pH | 4.88 | 6–7.5 | Adjust |
| Nitrogen | 1.22 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 20.3 mg/kg | min 12 mg/kg | OK |
| Potassium | 218 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,400 mm | 400–800 mm | High |
| Altitude | 1,500 m | 0–2,000 m | OK |
Planting calendar for Meru
Long Rains· March–MayMain season here
Short Rains· October–December
Dry Season· January–March
Top dressing guide
Meru's nitrogen (1.22 g/kg) already meets Sunflower's 0.8 g/kg requirement, so this is a maintenance rate.
Seed varieties for Meru
Varieties suited to Meru's 1,500 m altitude and 1,400 mm annual rainfall — 2 of 2 sunflower varieties we list.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag