Growing Napa Cabbage in Zone 13b

Zone 13b has a year-round growing season. Napa Cabbage can be planted almost any time with proper planning. Last frost: Jan 1. First frost: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Nov 20Dec 31

Season: Jan 1 – Dec 31 (364 days)

Zone13b

Last FrostJan 1

First FrostDec 31

Season Length364 days

Days to Harvest70

SunFull Sun

Frost ToleranceModerate

Spacing12/sqft

When to Plant Napa Cabbage in Zone 13b

Start Seeds Indoors: Nov 20

Start Napa Cabbage seeds indoors around Nov 20 (6 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 5–10 days.

Transplant Outdoors: Dec 11

Transplant Napa Cabbage seedlings outdoors after Dec 11. Wait until soil temperature reaches 45°F. Space plants at 12/sqft. Harden off plants for a week before moving outside.

Harvest: Feb 14

First harvest approximately Feb 14 (~65 days from transplant). Continue harvesting until first frost (Dec 31).

Fall Planting: Oct 8

For a fall harvest, plant Napa Cabbage around Oct 8 (12 weeks before first frost).

Napa Cabbage 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 Napa Cabbage in Zone 13b?

Start Napa Cabbage seeds indoors around Nov 20. Transplant outdoors after Dec 11. Expect first harvest around Feb 14.

What is the last frost date for Zone 13b?

The average last spring frost date for Zone 13b is Jan 1. The first fall frost averages Dec 31, giving a 364-day growing season.

Can I grow Napa Cabbage in Zone 13b?

Yes. Napa Cabbage needs 70 days to harvest. Zone 13b has a 364-day growing season, which is sufficient.

What is the best month to plant Napa Cabbage in Zone 13b?

The best time to start Napa Cabbage in Zone 13b is Nov. Begin seeds indoors around Nov 20, then transplant outdoors after the last frost date of Jan 1.

How long does Napa Cabbage take to harvest?

Napa Cabbage takes approximately 70 days from planting to harvest. In Zone 13b, expect your first harvest around Feb 14.

Plan Your Napa Cabbage Garden

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

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