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🌿 Growing Celery in Zone 10a

Zone 10a has a year-round growing season. Celery can be planted almost any time with proper planning. Last frost: Feb 20. First frost: Dec 1.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 12Dec 1

Season: Feb 20 – Dec 1 (284 days)

Zone10a

Last FrostFeb 20

First FrostDec 1

Season Length284 days

Days to Harvest100

SunFull Sun

Frost ToleranceLight

Spacing4/sqft (6" apart)

When to Plant Celery in Zone 10a

Start Seeds Indoors: Dec 12

Start Celery seeds indoors around Dec 12 (10 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 14–21 days.

Transplant Outdoors: Feb 20

Transplant Celery seedlings outdoors after Feb 20. Wait until soil temperature reaches 50°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: May 16

First harvest approximately May 16 (~85 days from transplant). Continue harvesting until first frost (Dec 1).

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 10a?

Start Celery seeds indoors around Dec 12. Transplant outdoors after Feb 20. Expect first harvest around May 16.

What is the last frost date for Zone 10a?

The average last spring frost date for Zone 10a is Feb 20. The first fall frost averages Dec 1, giving a 284-day growing season.

Can I grow Celery in Zone 10a?

Yes. Celery needs 100 days to harvest. Zone 10a has a 284-day growing season, which is sufficient.

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

The best time to start Celery in Zone 10a is Dec. Begin seeds indoors around Dec 12, then transplant outdoors after the last frost date of Feb 20.

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 10a, expect your first harvest around May 16.

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