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

Not your zone?

Showing USDA Zone 10A

Growing SeasonZone 10a

Last frost ~Jan 31First frost ~Dec 15Today

Start indoorsTransplant / sowHarvestFrost risk

DECJANFEBMAR

Start indoors Jan 3 · Transplant Jan 10 · First harvest Feb 24 · Wrap by Mar 17

Last spring frostJan 31

Start seeds indoorsJan 3

Transplant outJan 10

First harvestFeb 24

Last harvestMar 17

Fall succession sowOct 20

First fall frostDec 15

Why these dates work in zone 10a

Zone 10a's last spring frost averages Jan 31 and first fall frost Dec 15 — about 318 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 Oct 20 for a second harvest before frost.

Common questions

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

Bok Choy matures in about 45–60 days from transplanting. In zone 10a that means setting plants out around Jan 10 and first picking around Feb 24.

Will bok choy survive frost in zone 10a?

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

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

Yes — in zone 10a there's time for a fall sowing around Oct 20 for a second harvest before frost.

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