Growing Sunflower in Embu
Soil suitability analysis based on Embu's nutrient profile
Possible but challenging — Embu is only marginally suited to Sunflower. Embu's soil (pH 5.1, strongly acidic) gives Sunflower a suitability score of 44/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Embu County is a challenging environment for Sunflower (soil-match score 44/100) and will need significant amendment before planting. At an average pH of 5.1 the soil is moderately acidic, below Sunflower's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.04 g/kg), phosphorus (12.6 mg/kg) and potassium (194 mg/kg) all meet Sunflower's requirements, so a maintenance fertilizer programme is enough. Sunflower prefers sandy soils, while Embu 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 Embu County. Sunflower's full potential is about 750 kg/acre (~KES 36,000/acre at KES 48/kg), but at Embu's 44/100 suitability a realistic target here is closer to 413 kg/acre (~KES 19,824/acre) unless the constraints above are addressed.
Better matched to Embu's soil: Pineapple, Avocado, and Macadamia — each scores higher on the same soil.
Soil & climate match
| Factor | Embu soil | Sunflower needs | Status |
|---|---|---|---|
| pH | 5.1 | 6–7.5 | Adjust |
| Nitrogen | 1.04 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 12.6 mg/kg | min 12 mg/kg | OK |
| Potassium | 194 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,300 mm | 400–800 mm | High |
| Altitude | 1,400 m | 0–2,000 m | OK |
Planting calendar for Embu
Long Rains· March–MayMain season here
Short Rains· October–December
Dry Season· January–March
Top dressing guide
Embu's nitrogen (1.04 g/kg) already meets Sunflower's 0.8 g/kg requirement, so this is a maintenance rate.
Seed varieties for Embu
Varieties suited to Embu's 1,400 m altitude and 1,300 mm annual rainfall — 2 of 2 sunflower varieties we list.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag