When to plant mustard greens in zone 10a — planting calendar

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Showing USDA Zone 10A

Growing SeasonZone 10a

Last frost ~Jan 31First frost ~Dec 15Today

Start indoorsTransplant / sowHarvestFrost risk

DECJANFEBMAR

Sow Jan 3 · First harvest Jan 28 · Wrap by Feb 25

Last spring frostJan 31

Direct sowJan 3

First harvestJan 28

Last harvestFeb 25

Fall succession sowNov 3

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. Mustard Greens tolerates light frost, so you can sow ahead of the last-frost date and keep harvesting into the cooler fall. There's also room for a fall succession sowing around Nov 3 for a second harvest before frost.

Common questions

How long does mustard greens take to grow in zone 10a?

Mustard Greens matures in about 25–40 days from sowing. In zone 10a that means sowing around Jan 3 and first picking around Jan 28.

Will mustard greens survive frost in zone 10a?

Yes — mustard greens tolerates light frost. In zone 10a you can sow 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 mustard greens in zone 10a?

Yes — in zone 10a there's time for a fall sowing around Nov 3 for a second harvest before frost.

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