Collard, commonly known as Collard Greens, is a cool-season leafy vegetable grown for its large, smooth leaves and upright growth habit. The plant develops sturdy stems with broad green foliage that can be harvested over an extended period during the growing season. Collard plants grow well in cooler temperatures and adapt to a range of garden soils when provided with consistent moisture and sunlight. They are commonly cultivated in vegetable gardens and raised beds where the leaves are harvested as the plant matures.
Features
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Cool-season leafy vegetable producing large smooth leaves
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Upright growth habit with sturdy stems
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Suitable for vegetable gardens and raised beds
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Adapted to cooler growing conditions
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Leaves can be harvested over an extended growing period
Specifications
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Scientific Name: Brassica oleracea var. viridis
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Common Name (US): Collard Greens
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Seed Type / Variety: Vegetable seeds
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Growth Habit: Upright leafy annual plant
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USDA Zones: 2 to 11
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Planting Season: Early spring or late summer
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Growing Season: Spring and autumn
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Sowing Season:
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Zones 2 to 6: April to June or July to August
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Zones 7 to 11: March to May or August to October
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Germination Time and Conditions: 5 to 10 days at 18 to 24 C in moist, well-drained soil
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Sunlight Requirements: Full sun to partial sun
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Soil Requirements: Fertile, well-drained loamy soil
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Watering Needs: Moderate watering to keep soil evenly moist
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Mature Plant Size: 24 to 36 inches height; 18 to 24 inches spread
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Plant Spacing: 18 to 24 inches between plants