Growing Rosemary in Kisumu
Soil suitability analysis based on Kisumu's nutrient profile
Yes, with the right inputs — Kisumu is moderately suited to Rosemary. Kisumu's soil (pH 5.54, slightly acidic) gives Rosemary a suitability score of 56/100. Match fertilizer to Kisumu's nitrogen and phosphorus levels for the best result.
Rosemary can be grown in Kisumu County, but the soil scores 56/100 and needs targeted management to reach full potential. At an average pH of 5.54 the soil is slightly acidic to near-neutral, below Rosemary's preferred 6–8 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (0.91 g/kg), phosphorus (12.5 mg/kg) and potassium (166 mg/kg) all meet Rosemary's requirements, so a maintenance fertilizer programme is enough. Rosemary prefers sandy loam soils, while Kisumu is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Rosemary is the #75 soil match of the 106 crops we assess for Kisumu County. Rosemary's full potential is about 2,500 kg/acre (~KES 375,000/acre at KES 150/kg), but at Kisumu's 56/100 suitability a realistic target here is closer to 1,750 kg/acre (~KES 262,500/acre) unless the constraints above are addressed.
Better matched to Kisumu's soil: Cassava, Macadamia, and Pineapple — each scores higher on the same soil.
Soil & climate match
| Factor | Kisumu soil | Rosemary needs | Status |
|---|---|---|---|
| pH | 5.54 | 6–8 | Adjust |
| Nitrogen | 0.91 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 12.5 mg/kg | min 12 mg/kg | OK |
| Potassium | 166 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,200 mm | 400–900 mm | High |
| Altitude | 1,150 m | 800–2,400 m | OK |
Planting calendar for Kisumu
Long Rains· March–MayMain season here
Short Rains· September–November
Top dressing guide
Kisumu's nitrogen (0.91 g/kg) already meets Rosemary's 0.8 g/kg requirement, so this is a maintenance rate.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag