Growing Carrots in Zone 3B

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

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

• 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 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.