When to plant cucumber in zone 9a — planting calendar

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Showing USDA Zone 9A

Growing SeasonZone 9a

Last frost ~Feb 28First frost ~Nov 30Today

Start indoorsTransplant / sowHarvestFrost risk

JANFEBMARAPRMAYJUNJUL

Start indoors Feb 7 · Sow Mar 14 · First harvest May 3 · Wrap by Jun 28

Last spring frostFeb 28

Start seeds indoorsFeb 7

Direct sowMar 14

First harvestMay 3

Last harvestJun 28

First fall frostNov 30

Why these dates work in zone 9a

Zone 9a's last spring frost averages Feb 28 and first fall frost Nov 30 — about 275 frost-free days. Cucumber is frost-sensitive, so the 2w after frost timing builds in a safety margin against a late cold snap — setting plants out too early risks losing them to frost. Starting seeds indoors 3 weeks ahead gives strong transplants ready the moment the soil warms.

Common questions

How long does cucumber take to grow in zone 9a?

Cucumber matures in about 50–70 days from sowing. In zone 9a that means sowing around Mar 14 and first picking around May 3.

Will cucumber survive frost in zone 9a?

No — cucumber is frost-sensitive. In zone 9a, wait until after the last frost (around Feb 28) to plant, and harvest before the first fall frost (around Nov 30).

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