Growing Carrots in Zone 4B

Carrots are a rewarding root crop that thrives in loose, deep soil with consistent moisture.

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

• Loose, rock-free soil is essential for straight roots
• Seeds are tiny — mix with sand for even spacing
• Keep soil moist until germination (can take 2-3 weeks)
• Thin seedlings to 2-3 inches apart for good root development
• Shorter varieties work best in heavy or shallow soil

Companion Planting

Good companions: lettuce, tomatoes, chives, onions, rosemary

Avoid planting near: dill (cross-pollinates with Queen Anne’s lace family)

Harvest Timeline

60-80 days from seed

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.