Kale is an extremely cold-hardy green that actually tastes better after frost.
Zone 7B enjoys a long growing season. You can often get two plantings of cool-season crops (spring and fall).
Good companions: beets, celery, herbs, onions, potatoes
Avoid planting near: strawberries, tomatoes
50-65 days from seed (baby leaves at 25 days)
USDA Hardiness Zone 7B has an average last spring frost around Mar 28 and first fall frost around Nov 3. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.