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Growing Collard Greens Guide 
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Growing collard greens quick reference guide



Growing Collard Greens Guide

The growing collard greens quick reference guide below is designed as a quick overview of growing collard greens. For more details on the different stages from seed to harvest go to the related pages link.

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Quick Reference Guide






Veggie Garden Dairy
Vegetable Collard
Also Known As Borekale
Botanical Family - Brassicaceae, Species - Brassica oleracea, Cultivar group - Acephala Group
Plant Type Cool season - biennial - leafy vegetable
Frost Tolerance Hardy
Planting Position Sunny position but welcomes shade in the hottest part of the season - requiring a minimum of 3-4 hours of direct sunlight daily.
Seed Viability 5 years
Germination 5-8 days at 40-80 F (4-27 C)
Growing Temp 50-70 F (10-21 C)
Seed to Transplant 5-6 weeks
Planting Method Direct sow or Seedling transplants
When to Plant Spring and again in mid-summer for fall-winter harvest
Time to Plant As soon as 2 - 4 weeks before the average date of the last 32 F (0 C) freeze in the spring in your area but not before soil temperatures are consistently 40° F (4° C) and above.
Seed Sowing Direct sowing collard seeds - 1/2 inch (12 mm) deep - 2 inches (5 cm) apart in rows 24-30 inches (60-75 cm) apart
Plant Spacing Transplant or thin seedlings 6-8 inches (15-20 cm) apart - gradually thin to 18-24 inches (45-60 cm) apart in rows 24-30 inches (60-75 cm) apart
Soil Conditions Well drained - High organic matter - Low to medium fertility
Fertilizer Low fertilizer needs, 2-3 quarts per 100 sq feet (2.2-3.3 liters per 9.3 square meters) preplanting of All-Purpose 5-5-5 Organic Fertilizer icon, same rate for each side dressing.
When to Fertilize 2 weeks before sowing or transplanting - when transplanting use liquid starter fertilizer - side-dress every 3-4 weeks.
Days to Harvest 55-60 days - depending on conditions and variety.
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