Why these dates work in zone 3b
Zone 3b's last spring frost averages May 6 and first fall frost Oct 22 — about 169 frost-free days. Carrot tolerates light frost, so you can sow ahead of the last-frost date and keep harvesting into the cooler fall. There's also room for a fall succession sowing around Aug 6 for a second harvest before frost.
Common questions
How long does carrot take to grow in zone 3b?
Carrot matures in about 65–80 days from sowing. In zone 3b that means sowing around Apr 8 and first picking around Jun 12.
Will carrot survive frost in zone 3b?
Yes — carrot tolerates light frost. In zone 3b you can sow a little before the last frost (around May 6) and keep harvesting past the first fall frost (around Oct 22).
Can I plant a second crop of carrot in zone 3b?
Yes — in zone 3b there's time for a fall sowing around Aug 6 for a second harvest before frost.
For soil, spacing, pests and companion planting, see the full carrot growing guide →