When to plant cucumber in zone 5a — planting calendar

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Showing USDA Zone 5A

Growing SeasonZone 5a

Last frost ~May 10First frost ~Oct 1Today

Start indoorsTransplant / sowHarvestFrost risk

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Start indoors Apr 19 · Sow May 24 · First harvest Jul 13 · Wrap by Sep 7

Last spring frostMay 10

Start seeds indoorsApr 19

Direct sowMay 24

First harvestJul 13

Last harvestSep 7

First fall frostOct 1

Why these dates work in zone 5a

Zone 5a's last spring frost averages May 10 and first fall frost Oct 1 — about 144 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 5a?

Cucumber matures in about 50–70 days from sowing. In zone 5a that means sowing around May 24 and first picking around Jul 13.

Will cucumber survive frost in zone 5a?

No — cucumber is frost-sensitive. In zone 5a, wait until after the last frost (around May 10) to plant, and harvest before the first fall frost (around Oct 1).

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