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🌿 Growing Celery in Zone 3b

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

Planting Calendar

Indoor

Outdoor

Harvest

Mar 6Sep 22

Season: May 15 – Sep 22 (130 days)

Zone3b

Last FrostMay 15

First FrostSep 22

Season Length130 days

Days to Harvest100

SunFull Sun

Frost ToleranceLight

Spacing4/sqft (6" apart)

When to Plant Celery in Zone 3b

Start Seeds Indoors: Mar 6

Start Celery seeds indoors around Mar 6 (10 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 14–21 days.

Transplant Outdoors: May 15

Transplant Celery seedlings outdoors after May 15. Wait until soil temperature reaches 50°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Aug 8

First harvest approximately Aug 8 (~85 days from transplant). Continue harvesting until first frost (Sep 22).

Companion Planting

✅ Tomatoes✅ Cabbage✅ Beans✅ Leeks✅ Cauliflower

❌ Corn❌ Aster flowers

Celery 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

Frequently Asked Questions

When should I plant Celery in Zone 3b?

Start Celery seeds indoors around Mar 6. Transplant outdoors after May 15. Expect first harvest around Aug 8.

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 Celery in Zone 3b?

Yes. Celery needs 100 days to harvest. Zone 3b has a 130-day growing season, which is sufficient.

What is the best month to plant Celery in Zone 3b?

The best time to start Celery in Zone 3b is Mar. Begin seeds indoors around Mar 6, then transplant outdoors after the last frost date of May 15.

What companion plants grow well with Celery?

Good companion plants for Celery include Tomatoes, Cabbage, Beans, Leeks, Cauliflower. Avoid planting Celery near Corn, Aster flowers.

How long does Celery take to harvest?

Celery takes approximately 100 days from planting to harvest. In Zone 3b, expect your first harvest around Aug 8.

Plan Your Celery Garden

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

Start Free Celery Growing Guide