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Vegetables

Collard Greens

Brassica oleracea var. viridis

Collard greens are a leafy green vegetable belonging to the Brassica family. They are characterized by large, dark green leaves and a robust flavor. Collards are rich in vitamins A, C, and K, and are often used in Southern U.S. cuisine, particularly in dishes like collard greens stew. They are important for their nutritional value and adaptability to various growing conditions.

Calculate System for Collard Greens
400.00–600.00mm
Water Need
120 days
Season
30.00–60.00cm
Root Depth
25,000 kg/ha
Yield
20,000
Plants/ha

Growth Stages

Season: Mar – Aug (120 days)

Initial
Kc 0.400
30 days
Development
Kc 0.700
40 days
Mid-Season
Kc 1.000
60 days
Late
Kc 0.800
30 days

Collard greens can be grown as a spring or fall crop. They are tolerant of frost, which can enhance their flavor. Varieties include Georgia Southern and Vates.

Water Requirements

Season Total: 400.00600.00 mm
Water Stress Sensitivity: High
Salt Tolerance: Moderate
Water Productivity: 15.500 kg/m³

Recommended Methods

Drip Irrigation90.00%Fixed Sprinkler70.00%

Soil Compatibility

Optimal pH range: 6.0 – 7.5

Sandy Loam
AWC100.00mm/m
Drainagegood
Drainage: Well-drained soils preferred
Organic Matter: 2.00%
Soil should be rich in organic matter. Incorporate compost or well-rotted manure before planting to improve soil fertility.

Climate Compatibility

Temperature range: 15.0°C – 30.0°C

Temperate Continental
ETo: 1.006.00 mm/day
Temp: -20.0°C – 30.0°C
Frost: high
Mediterranean
ETo: 3.007.00 mm/day
Temp: 5.0°C – 35.0°C
Frost: low
Frost Tolerance: Low frost tolerance
Heat Tolerance: Moderate heat tolerance
Collard greens prefer cooler weather. In hotter climates, provide shade during peak summer months to prevent bolting.

Planting Layout

100.00cm
Row Spacing
50.00cm
Plant Spacing
20,000
Plants per ha

Nutrient Requirements (kg/ha)

Nitrogen (N)150 kg/ha
Phosphorus (P)60 kg/ha
Potassium (K)180 kg/ha
40
Calcium (Ca) kg/ha
25
Magnesium (Mg) kg/ha
20
Sulfur (S) kg/ha
Schedule: Apply nitrogen in 3 splits during growing season
Organic Matter: 2-3% organic matter recommended

Yield Information

25,000
kg/ha
2.500
kg/plant
0.450
Harvest Index
Quality Factors: Size, color, tenderness

Design Your Collard Greens Irrigation System

Use our free calculators to plan water requirements, spacing, and system costs for your Collard Greens field.

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Related Guides

Growing and Irrigating Collard Greens: A Comprehensive Guide

Introduction Collard greens, scientifically known as Brassica oleracea var. viridis, are leafy green vegetables that belong to the same family as cabbage, broccoli and kale. They are highly nutritious and have gained popularity due to their health benefits and versatility in cooking. In this article, we will explore…

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