Crop Name: Collard greens
Scientific Name: Brassica oleracea
Family Name: Brassicaceae
Cultivar Groups: Acephala (collards, kale, spring greens)
Warm season or cool season: cool season crop that prefer temperature 40-65 degrees F and tolerate temperature as low as 15 degrees F. Germinate at 45-80 degrees F.
Space between plants/between rows: 10-12 inches apart.
Fertility Requirements: 60-80 lbs of nitrogen per acre prior to planting and 15-30 lbs side dressed 4-6 weeks after planting pH 6-6.5.
Watering Needs: Moist and well drained soil. weekly watering.
Number of days from seed to transplant and/or seed to harvest: 50-60 days to harvest after transplant.
Planting Instructions: Plant transplants in a single row 10-12 inches apart.
Potential Pests: aphids, cabbage hopper,flea beetles, whiteflies, and cabbage worms.
Insect Pests Controls:
Plant Pathogens: leaf spot and soil borne fungi can be prevented by fungicide, crop rotation, and diversity.
HARVEST & STORAGE INFORMATION:
When Ready to Harvest: When leaves are dark green and 10-12 inches while plant is not reproductively mature.
How to Harvest: Use shares to remove individual leaves.
Optimal Time of Day to Harvest: Morning
Best Method to Cool Crop: Rapid cooling through refrigeration.
Optimal Storage Temperature and Relative Humidity: 0 degrees celsius at 97%-100% rH
Possible Storage Life: 14 days
Common Post-Harvest Losses/Problems: Sensitive to ethylene injury.
Average Yields: 9,000 pounds per acre
Farm to YouNH Crop Data:
|Year||Variety||Date Planted||Date Harvested||Days to Harvest||Yield (lbs/sq. ft)|
|N/A||sep 12||nov 6||55||.5-1 lb|
|sep 19||nov 13||55||.5-1 lb|