They are generally very winter hardy. This is a standard old variety. Uniform maturing, smooth, pure white heads weighing 3 - 5 pounds and 6 inches across. It is a medium sized plant with good leaf coverage. Do not require tying until 6 to 8 inches.
Collards are cold-hardy plants that are very common in the south.
In the South, sow in late summer or early fall for winter and spring harvests. In colder climates, when the soil temperatures are between 50 and 80 F, sow in late spring for fall harvest. Start cutting individual leaves about 65 days from planting and continue harvesting the lower leaves because if they are left on the plant they become tough. Plants grow 2 - 3 feet tall. Slow to bolt.