Rape / Covo
Crop Encyclopedia

Rape / Covo

Brassica napus (Rape) / Brassica oleracea (Covo)

leafy vegetable
All-year

Rape and covo (collard greens) are staple relish vegetables consumed throughout Zimbabwe. They are grown year-round under irrigation and are among the most widely traded vegetables.

45

Days to Maturity

15–30 tonnes/ha

Typical Yield

Moderate

Water Need

Moderate

Drought Tolerance

Soil Requirements

Optimal Soil Types

Loamy
Clay loam
Sandy loam

pH Range: 6 – 7

Fertile, well-drained loamy soils with good organic matter. Both crops are heavy feeders and respond well to compost and manure.

Fertilizer: 2 Nutrich earthworm poop tea 16 Nutrich vermicompost 5 Nutrich vermifoliar

Climate Requirements

Optimal Temp: 15–25°C

Rainfall: 300–900mm/year

Climate Zones

Moderate
High rainfall
Semi-arid

Apply 25–30mm per week via drip or furrow. Consistent moisture gives bigger, more succulent leaves.

Current Weather for Rape / Covo

23°C

clear sky

Bulawayo

32%

Humidity

24

km/h Wind

23–23°C

Min / Max Today

5-Day Forecast

Fri

23°

23°

Sat

34°

16°

Sun

37°

18°

Mon

40°

19°

Tue

38°

22°

Rape / Covo optimal climate: Temp: 15–25°C°C · Rainfall: 300–900mm/yr

Planting & Harvesting

Planting Months

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Harvesting Months

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Planting Depth: Transplanted seedlings (3–4 week nursery)

Spacing: 50cm × 40cm (Rape) or 60cm × 45cm (Covo)

Material: Seedlings

Suitable Provinces & Regions

Provinces

Harare
Bulawayo
Mashonaland East
Mashonaland West
Manicaland
Midlands
Masvingo

Natural Regions

Region I
Region II
Region III
Common Pests
Diamondback Moth
High

Symptoms: Window-pane feeding, skeletonised leaves

Management: Bt or spinosad spray; rotate insecticides to prevent resistance

Aphids (Cabbage)
Medium

Symptoms: Grey-white colonies on leaves, deformed growth

Management: Dimethoate spray; natural predators

Cutworm
Medium

Symptoms: Seedlings cut at soil level, plant death

Management: Cypermethrin soil spray; bait pellets at transplanting

Common Diseases
Black Rot (Xanthomonas)
High

Symptoms: V-shaped yellow lesion from leaf margin, blackened veins

Management: Copper bactericide; disease-free transplants; 3-year crop rotation

Downy Mildew
Medium

Symptoms: Yellow patches on upper leaf, grey mould below

Management: Metalaxyl + mancozeb spray; improve air circulation

Club Root (Plasmodiophora)
Medium

Symptoms: Swollen distorted roots, wilting, stunted growth

Management: Lime soil to pH 7.0; long rotation; avoid infected transplants

Governed Product Guidance

Crop-specific product selection, application rates, mixing, timing and treatment guidance for Rape / Covo are available only through ZEF's governed production-agronomy workflow after country readiness and product/regulatory approval.

Recommended Varieties
Rape: Choumoellier, Broad-leaf Essex
Covo: Thousandhead, Open-pollinated local
Market & Uses

Fresh relish vegetable for domestic market (most widely consumed vegetable in Zimbabwe), informal market trading

Export Potential:

Low

Cultivation Guide

AI-Generated

Step-by-step guide tailored to Rape / Covo in Zimbabwe

Country is not approved for production agronomy.

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