When to plant leek in zone 9b — planting calendar

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Showing USDA Zone 9B

Growing SeasonZone 9b

Last frost ~Feb 15First frost ~Dec 10Today

Start indoorsTransplant / sowHarvestFrost risk

NOVDECJANFEBMARAPRMAYJUNJUL

Start indoors Nov 23 · Transplant Feb 1 · First harvest May 12 · Wrap by Jul 7

Last spring frostFeb 15

Start seeds indoorsNov 23

Transplant outFeb 1

First harvestMay 12

Last harvestJul 7

First fall frostDec 10

Why these dates work in zone 9b

Zone 9b's last spring frost averages Feb 15 and first fall frost Dec 10 — about 298 frost-free days. Leek 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 12 weeks ahead gives strong transplants ready the moment the soil warms.

Common questions

How long does leek take to grow in zone 9b?

Leek matures in about 100–120 days from transplanting. In zone 9b that means setting plants out around Feb 1 and first picking around May 12.

Will leek survive frost in zone 9b?

Yes — leek tolerates light frost. In zone 9b you can set plants out a little before the last frost (around Feb 15) and keep harvesting past the first fall frost (around Dec 10).

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