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🌿 Growing Celery in Zone 10b

Zone 10b has a year-round growing season. Celery can be planted almost any time with proper planning. Last frost: Jan 28. First frost: Dec 22.

Planting Calendar

Indoor

Outdoor

Harvest

Nov 19Dec 22

Season: Jan 28 – Dec 22 (328 days)

Zone10b

Last FrostJan 28

First FrostDec 22

Season Length328 days

Days to Harvest100

SunFull Sun

Frost ToleranceLight

Spacing4/sqft (6" apart)

When to Plant Celery in Zone 10b

Start Seeds Indoors: Nov 19

Start Celery seeds indoors around Nov 19 (10 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 14–21 days.

Transplant Outdoors: Jan 28

Transplant Celery seedlings outdoors after Jan 28. Wait until soil temperature reaches 50°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Apr 23

First harvest approximately Apr 23 (~85 days from transplant). Continue harvesting until first frost (Dec 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 10b?

Start Celery seeds indoors around Nov 19. Transplant outdoors after Jan 28. Expect first harvest around Apr 23.

What is the last frost date for Zone 10b?

The average last spring frost date for Zone 10b is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.

Can I grow Celery in Zone 10b?

Yes. Celery needs 100 days to harvest. Zone 10b has a 328-day growing season, which is sufficient.

What is the best month to plant Celery in Zone 10b?

The best time to start Celery in Zone 10b is Nov. Begin seeds indoors around Nov 19, then transplant outdoors after the last frost date of Jan 28.

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 10b, expect your first harvest around Apr 23.

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