When should I plant Carrot in Zone 4b?

Direct sow Carrot outdoors around Apr 10. Harvest around Jun 19.

What is the last frost date for Zone 4b?

The average last spring frost date for Zone 4b is May 1. The first fall frost averages Oct 5, giving a 157-day growing season.

Can I grow Carrot in Zone 4b?

Yes. Carrot needs 70 days to harvest. Zone 4b has a 157-day growing season, which is sufficient. You can plant up to 4 successions.

🥕

🥕 Growing Carrot in Zone 4b

Zone 4b has cold winters and a moderate growing season. Timing is key for Carrot in this zone. Last frost: May 1. First frost: Oct 5.

Planting Calendar

Outdoor

Harvest

Apr 10Oct 5

Season: May 1 – Oct 5 (157 days) · Succession: plant every 3 weeks (up to 4x)

Zone4b

Last FrostMay 1

First FrostOct 5

Season Length157 days

Days to Harvest70

SunFull Sun

Frost ToleranceModerate

Spacing16/sqft (3" apart)

When to Plant Carrot in Zone 4b

Sow Seeds Outdoors: Apr 10

Direct sow Carrot seeds outdoors around Apr 10. Soil temperature should be at least 45°F. Space at 16/sqft (3" apart).

Harvest: Jun 19

First harvest approximately Jun 19 (~70 days from planting). Continue harvesting until first frost (Oct 5). Carrot can overwinter in mild climates for continued harvest.

Fall Planting: Jul 27

For a fall harvest, plant Carrot around Jul 27 (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