When to plant scallion 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

DECJANFEBMARAPRMAY

Sow Jan 10 · First harvest Mar 11 · Wrap by Apr 22

Last spring frostJan 31

Direct sowJan 10

First harvestMar 11

Last harvestApr 22

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. Scallion 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 Oct 20 for a second harvest before frost.

Common questions

How long does scallion take to grow in zone 10a?

Scallion matures in about 60–70 days from sowing. In zone 10a that means sowing around Jan 10 and first picking around Mar 11.

Will scallion survive frost in zone 10a?

Yes — scallion 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 scallion 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 scallion growing guide →