Growing Bok Choy in Zone 10b

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

Planting Calendar

Indoor

Outdoor

Harvest

Dec 17Dec 22

Season: Jan 28 – Dec 22 (328 days) · Succession: plant every 2 weeks (up to 20x)

Zone10b

Last FrostJan 28

First FrostDec 22

Season Length328 days

Days to Harvest45

SunPart Sun / Part Shade

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Bok Choy in Zone 10b

Start Seeds Indoors: Dec 17

Start Bok Choy seeds indoors around Dec 17 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 4–8 days.

Transplant Outdoors: Jan 21

Transplant Bok Choy seedlings outdoors after Jan 21. Wait until soil temperature reaches 45°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Feb 25

First harvest approximately Feb 25 (~35 days from transplant). Continue harvesting until first frost (Dec 22).

Fall Planting: Nov 3

For a fall harvest, plant Bok Choy around Nov 3 (7 weeks before first frost).

Companion Planting

✅ Carrots✅ Beets✅ Dill✅ Onions✅ Beans

❌ Strawberries

Bok Choy 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 Bok Choy in Zone 10b?

Start Bok Choy seeds indoors around Dec 17. Transplant outdoors after Jan 21. Expect first harvest around Feb 25.

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 Bok Choy in Zone 10b?

Yes. Bok Choy needs 45 days to harvest. Zone 10b has a 328-day growing season, which is sufficient. You can plant up to 20 successions.

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

The best time to start Bok Choy in Zone 10b is Dec. Begin seeds indoors around Dec 17, then transplant outdoors after the last frost date of Jan 28.

What companion plants grow well with Bok Choy?

Good companion plants for Bok Choy include Carrots, Beets, Dill, Onions, Beans. Avoid planting Bok Choy near Strawberries.

How long does Bok Choy take to harvest?

Bok Choy takes approximately 45 days from planting to harvest. In Zone 10b, expect your first harvest around Feb 25.

Plan Your Bok Choy Garden

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

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