When to plant bok choy in zone 10b — planting calendar

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Showing USDA Zone 10B

Growing SeasonZone 10b

Last frost ~Jan 15First frost ~Dec 31Today

Start indoorsTransplant / sowHarvestFrost risk

DECJANFEBMAR

Start indoors Dec 18 · Transplant Dec 25 · First harvest Feb 8 · Wrap by Mar 1

Last spring frostJan 15

Start seeds indoorsDec 18

Transplant outDec 25

First harvestFeb 8

Last harvestMar 1

Fall succession sowNov 5

First fall frostDec 31

Why these dates work in zone 10b

Zone 10b's last spring frost averages Jan 15 and first fall frost Dec 31 — about 350 frost-free days. Bok Choy tolerates light frost, so you can set plants out ahead of the last-frost date and keep harvesting into the cooler fall. Starting seeds indoors 4 weeks ahead gives strong transplants ready the moment the soil warms. There's also room for a fall succession sowing around Nov 5 for a second harvest before frost.

Common questions

How long does bok choy take to grow in zone 10b?

Bok Choy matures in about 45–60 days from transplanting. In zone 10b that means setting plants out around Dec 25 and first picking around Feb 8.

Will bok choy survive frost in zone 10b?

Yes — bok choy tolerates light frost. In zone 10b you can set plants out a little before the last frost (around Jan 15) and keep harvesting past the first fall frost (around Dec 31).

Can I plant a second crop of bok choy in zone 10b?

Yes — in zone 10b there's time for a fall sowing around Nov 5 for a second harvest before frost.

For soil, spacing, pests and companion planting, see the full bok choy growing guide →