Kale is the most cold hardy vegetable you can grow. It will even survive snows. With it’s dusty green leaves and purple stems, Red Russian kale not only looks great, but it is tender with a slightly sweet flavor.
Direct seed about three months before expected fall frost. Plant seeds ¼ to ½ inch deep, 1 inch apart in rows 18 to 30 inches apart. Thin to 12- to 18-inch spacings. Eat or transplant thinnings. Similar to cabbage and other cole crops, you can also set out transplants in spring 4 to 6 weeks before average last frost, 12 inches apart, rows 18 to 24 inches apart.
Doesn't seem to be as troubled by pests as most other cole crops. Use floating row covers to help protect from early insect infestations.
To help reduce disease, do not plant kale or other cole crops in the same location more than once every three or four years.