Growing Bok Choy in Zone 10a

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

Planting Calendar

Indoor

Outdoor

Harvest

Jan 9Dec 1

Season: Feb 20 – Dec 1 (284 days) · Succession: plant every 2 weeks (up to 17x)

Zone10a

Last FrostFeb 20

First FrostDec 1

Season Length284 days

Days to Harvest45

SunPart Sun / Part Shade

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Bok Choy in Zone 10a

Start Seeds Indoors: Jan 9

Start Bok Choy seeds indoors around Jan 9 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 4–8 days.

Transplant Outdoors: Feb 13

Transplant Bok Choy seedlings outdoors after Feb 13. Wait until soil temperature reaches 45°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Mar 20

First harvest approximately Mar 20 (~35 days from transplant). Continue harvesting until first frost (Dec 1).

Fall Planting: Oct 13

For a fall harvest, plant Bok Choy around Oct 13 (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 10a?

Start Bok Choy seeds indoors around Jan 9. Transplant outdoors after Feb 13. Expect first harvest around Mar 20.

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 Bok Choy in Zone 10a?

Yes. Bok Choy needs 45 days to harvest. Zone 10a has a 284-day growing season, which is sufficient. You can plant up to 17 successions.

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

The best time to start Bok Choy in Zone 10a is Jan. Begin seeds indoors around Jan 9, then transplant outdoors after the last frost date of Feb 20.

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 10a, expect your first harvest around Mar 20.

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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