Growing Kale (Sukuma Wiki) in Garissa
Soil suitability analysis based on Garissa's nutrient profile
Generally not ideal — Garissa is poorly suited to Kale (Sukuma Wiki). Garissa's soil (pH 7.96, alkaline) gives Kale (Sukuma Wiki) a suitability score of 1/100. Match fertilizer to Garissa's nitrogen and phosphorus levels for the best result.
Garissa County is a challenging environment for Kale (Sukuma Wiki) (soil-match score 1/100) and will need significant amendment before planting. At an average pH of 7.96 the soil sits above Kale (Sukuma Wiki)'s preferred 5–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.61 g/kg, P 37.7 mg/kg, K 407 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Kale (Sukuma Wiki) prefers clay loam soils, while Garissa is largely sandy, so drainage and organic-matter management matter more here. Garissa receives approximately 250 mm/year — well below Kale (Sukuma Wiki)'s minimum of 700 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Kale (Sukuma Wiki) is the #67 soil match of the 106 crops we assess for Garissa County. Kale (Sukuma Wiki)'s full potential is about 12,000 kg/acre (~KES 240,000/acre at KES 20/kg), but at Garissa's 1/100 suitability a realistic target here is closer to 150 kg/acre (~KES 3,000/acre) unless the constraints above are addressed.
Better matched to Garissa's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.
Soil & climate match
| Factor | Garissa soil | Kale (Sukuma Wiki) needs | Status |
|---|---|---|---|
| pH | 7.96 | 5–7 | Adjust |
| Nitrogen | 0.61 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 37.7 mg/kg | min 12 mg/kg | OK |
| Potassium | 407 mg/kg | min 150 mg/kg | OK |
| Rainfall | 250 mm | 700–1,800 mm | Low |
| Altitude | 200 m | 500–2,500 m | Low |
Planting calendar for Garissa
Long Rains· March–May
Short Rains· October–DecemberMain season here
Dry Season· January–March
Top dressing guide
Garissa's nitrogen (0.61 g/kg) is 51% of the 1.2 g/kg Kale (Sukuma Wiki) needs, so the standard 0.5 bags/acre is raised to 0.75. Split it across two applications to limit leaching.
Recommended seed varieties
No variety in our list is specifically rated for Garissa's 200 m altitude and 250 mm rainfall, so all 2 are shown. Confirm with your agrovet before buying.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag