Growing Broccoli in Wajir

Soil suitability analysis based on Wajir's nutrient profile

Quick answer

Generally not ideal — Wajir is poorly suited to Broccoli. Wajir's soil (pH 8.4, alkaline) gives Broccoli a suitability score of 0/100. Match fertilizer to Wajir's nitrogen and phosphorus levels for the best result.

Wajir County is a challenging environment for Broccoli (soil-match score 0/100) and will need significant amendment before planting. At an average pH of 8.4 the soil sits above Broccoli's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.52 g/kg, P 39.3 mg/kg, K 396 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. Broccoli prefers loam soils, while Wajir is largely sandy, so drainage and organic-matter management matter more here. Wajir receives approximately 200 mm/year — well below Broccoli's minimum of 800 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Broccoli is the #96 soil match of the 106 crops we assess for Wajir County. Broccoli's full potential is about 6,000 kg/acre (~KES 540,000/acre at KES 90/kg), but at Wajir's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/acre) unless the constraints above are addressed.

Better matched to Wajir's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.

0Suitability score

Soil & climate match

FactorWajir soilBroccoli needsStatus
pH8.467.5Adjust
Nitrogen0.52 g/kgmin 1.2 g/kgLow
Phosphorus39.3 mg/kgmin 20 mg/kgOK
Potassium396 mg/kgmin 200 mg/kgOK
Rainfall200 mm800–1,500 mmLow
Altitude250 m1,800–2,800 mLow

Planting calendar for Wajir

Long Rains· MarchMay

March
Nursery Preparation & Transplanting & DAP Basal
April
CAN Top Dressing (week 3) & Caterpillar Control
May
Head Initiation Top Dress & Harvesting

Short Rains· OctoberDecemberMain season here

October
Nursery & Transplanting
November
Top Dressing & DBM Scouting
December
Harvesting

Dry Season· JanuaryMarch

January
Irrigation-based Transplanting
February
CAN Top Dressing & Pest Management
March
Harvesting & Land Preparation

Top dressing guide

Product
CAN
Timing
Week 3 then head initiation (week 6)
Instruction
Apply 3 weeks after transplanting and again at head initiation (~week 6); broccoli needs steady N for tight heads
Bags per acre in Wajir
2.251.5

Wajir's nitrogen (0.52 g/kg) is 43% of the 1.2 g/kg Broccoli needs, so the standard 1.5 bags/acre is raised to 2.25. Split it across two applications to limit leaching.

Recommended seed varieties

No variety in our list is specifically rated for Wajir's 250 m altitude and 200 mm rainfall, so all 3 are shown. Confirm with your agrovet before buying.

CalabreseHighland
Simlaw Seeds · 70-90 days · 2–3.5 tons/acre
Open-pollinated broccoli; central head plus side shoots; suited to cool highlands.
Green Magic F1Highland
East Africa Seeds · 60-75 days · 3–4.5 tons/acre
Hybrid; uniform dome heads; heat tolerant; export and supermarket quality.
Marathon F1Highland
Royal Seeds · 75-95 days · 2.8–4.3 tons/acre
Large dense heads; downy mildew tolerant; excellent for high-altitude production.

Economics

Market priceKES 90/kg
Expected yield in Wajir0 kg/acre
Estimated revenueKES 0/acre
Adjusted for Wajir's 0/100 suitability. Under ideal conditions Broccoli can reach 6,000 kg/acre (~KES 540,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureLoam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(5,700)
NPK 17:17:17
KES 3,275(5,600)
Urea
KES 3,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag