Growing Brussels Sprouts in Zone 4B

Brussels sprouts need a long growing season but frost dramatically improves their flavor.

Zone 4B has a short growing season — start seeds indoors when possible and use season-extending techniques like cold frames and row covers.

Top Growing Tips

• Start indoors in spring for fall harvest — they need 80-100 days
• Remove lower leaves as sprouts develop to improve air circulation
• Top the plant 3-4 weeks before expected harvest to speed maturity
• Harvest from bottom up as sprouts reach 1-2 inches
• Flavor is best after several hard frosts

Companion Planting

Good companions: beets, carrots, onions, dill, sage

Avoid planting near: strawberries, tomatoes

Harvest Timeline

80-100 days from transplant

About Zone 4B

USDA Hardiness Zone 4B has an average last spring frost around May 1 and first fall frost around Oct 1. 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.