When to plant potato 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

DECJANFEBMARAPRMAY

Sow Jan 1 · First harvest Mar 12 · Wrap by Apr 23

Last spring frostJan 15

Direct sowJan 1

First harvestMar 12

Last harvestApr 23

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. Potato tolerates light frost, so you can sow ahead of the last-frost date and keep harvesting into the cooler fall.

Common questions

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

Potato matures in about 70–120 days from sowing. In zone 10b that means sowing around Jan 1 and first picking around Mar 12.

Will potato survive frost in zone 10b?

Yes — potato 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).

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