When should I plant Carrot in Zone 3b?

Direct sow Carrot outdoors around Apr 24. Harvest around Jul 3.

What is the last frost date for Zone 3b?

The average last spring frost date for Zone 3b is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.

Can I grow Carrot in Zone 3b?

Yes. Carrot needs 70 days to harvest. Zone 3b has a 130-day growing season, which is sufficient. You can plant up to 2 successions.

🥕

🥕 Growing Carrot in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Carrot early indoors to maximize your harvest window. Last frost: May 15. First frost: Sep 22.

Planting Calendar

Outdoor

Harvest

Apr 24Sep 22

Season: May 15 – Sep 22 (130 days) · Succession: plant every 3 weeks (up to 2x)

Zone3b

Last FrostMay 15

First FrostSep 22

Season Length130 days

Days to Harvest70

SunFull Sun

Frost ToleranceModerate

Spacing16/sqft (3" apart)

When to Plant Carrot in Zone 3b

Sow Seeds Outdoors: Apr 24

Direct sow Carrot seeds outdoors around Apr 24. Soil temperature should be at least 45°F. Space at 16/sqft (3" apart).

Harvest: Jul 3

First harvest approximately Jul 3 (~70 days from planting). Continue harvesting until first frost (Sep 22). Carrot can overwinter in mild climates for continued harvest.

Fall Planting: Jul 14

For a fall harvest, plant Carrot around Jul 14 (10 weeks before first frost).

Companion Planting

✅ Onions✅ Chives ✅ Rosemary✅ Tomatoes✅ Leeks

❌ Dill❌ Parsnips

Carrot in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Carrot Garden

Track Carrot from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Carrot Growing Guide