When to plant carrot in zone 3b — planting calendar

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Showing USDA Zone 3B

Growing SeasonZone 3b

Last frost ~May 25First frost ~Sep 15Today

Start indoorsTransplant / sowHarvestFrost risk

APRMAYJUNJULAUG

Sow Apr 27 · First harvest Jul 1 · Wrap by Aug 12

Last spring frostMay 25

Direct sowApr 27

First harvestJul 1

Last harvestAug 12

Fall succession sowJun 30

First fall frostSep 15

Why these dates work in zone 3b

Zone 3b's last spring frost averages May 25 and first fall frost Sep 15 — about 113 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 Jun 30 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 27 and first picking around Jul 1.

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 25) and keep harvesting past the first fall frost (around Sep 15).

Can I plant a second crop of carrot in zone 3b?

Yes — in zone 3b there's time for a fall sowing around Jun 30 for a second harvest before frost.

For soil, spacing, pests and companion planting, see the full carrot growing guide →