When to plant cilantro 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

JANFEBMAR

Start indoors Jan 15 · Sow Jan 15 · First harvest Feb 5 · Wrap by Mar 5

Last spring frostJan 15

Start seeds indoorsJan 15

Direct sowJan 15

First harvestFeb 5

Last harvestMar 5

Fall succession sowNov 19

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. Cilantro tolerates light frost, so you can sow ahead of the last-frost date and keep harvesting into the cooler fall. Starting seeds indoors 0 weeks ahead gives strong transplants ready the moment the soil warms. There's also room for a fall succession sowing around Nov 19 for a second harvest before frost.

Common questions

How long does cilantro take to grow in zone 10b?

Cilantro matures in about 21–28 days from sowing. In zone 10b that means sowing around Jan 15 and first picking around Feb 5.

Will cilantro survive frost in zone 10b?

Yes — cilantro tolerates light frost. In zone 10b you can sow 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 cilantro in zone 10b?

Yes — in zone 10b there's time for a fall sowing around Nov 19 for a second harvest before frost.

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