When should I plant Cabbage in Zone 9b?

Start Cabbage seeds indoors around Jan 27. Transplant outdoors after Feb 17. Expect first harvest around Apr 23.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Can I grow Cabbage in Zone 9b?

Yes. Cabbage needs 80 days to harvest. Zone 9b has a 250-day growing season, which is sufficient.

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🥬 Growing Cabbage in Zone 9b

Zone 9b has warm winters and an extended growing season — excellent for heat-loving crops like Cabbage. Last frost: Mar 10. First frost: Nov 15.

Planting Calendar

Indoor

Outdoor

Harvest

Jan 27Nov 15

Season: Mar 10 – Nov 15 (250 days)

Zone9b

Last FrostMar 10

First FrostNov 15

Season Length250 days

Days to Harvest80

SunFull Sun

Frost ToleranceModerate

Spacing1/sqft (12" apart)

When to Plant Cabbage in Zone 9b

Start Seeds Indoors: Jan 27

Start Cabbage seeds indoors around Jan 27 (6 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 5–10 days.

Transplant Outdoors: Feb 17

Transplant Cabbage seedlings outdoors after Feb 17. Wait until soil temperature reaches 45°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: Apr 23

First harvest approximately Apr 23 (~65 days from transplant). Continue harvesting until first frost (Nov 15).

Fall Planting: Aug 23

For a fall harvest, plant Cabbage around Aug 23 (12 weeks before first frost).

Companion Planting

✅ Potatoes✅ Mint ✅ Dill✅ Onions✅ Celery

❌ Beans❌ Tomatoes❌ Strawberries

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

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