Growing Kale in Zone 3B

Kale is an extremely cold-hardy green that actually tastes better after frost.

Zone 3B has a short growing season — start seeds indoors when possible and use season-extending techniques like cold frames and row covers.

Top Growing Tips

• One of the hardiest vegetables — survives into the 20s°F
• Flavor sweetens after frost exposure
• Harvest outer leaves first, leaving the center to keep growing
• Can overwinter in zones 7+ with mulch protection
• Lacinato (dinosaur) kale is the most cold-tolerant variety

Companion Planting

Good companions: beets, celery, herbs, onions, potatoes

Avoid planting near: strawberries, tomatoes

Harvest Timeline

50-65 days from seed (baby leaves at 25 days)

About Zone 3B

USDA Hardiness Zone 3B has an average last spring frost around May 15 and first fall frost around Sep 15. 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.