When to plant winter squash in zone 7a — planting calendar

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Showing USDA Zone 7A

Growing SeasonZone 7a

Last frost ~Apr 15First frost ~Oct 25Today

Start indoorsTransplant / sowHarvestFrost risk

MARAPRMAYJUNJULAUG

Start indoors Mar 25 · Sow Apr 29 · First harvest Jul 18 · Wrap by Aug 8

Last spring frostApr 15

Start seeds indoorsMar 25

Direct sowApr 29

First harvestJul 18

Last harvestAug 8

First fall frostOct 25

Why these dates work in zone 7a

Zone 7a's last spring frost averages Apr 15 and first fall frost Oct 25 — about 193 frost-free days. Winter Squash 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 winter squash take to grow in zone 7a?

Winter Squash matures in about 80–110 days from sowing. In zone 7a that means sowing around Apr 29 and first picking around Jul 18.

Will winter squash survive frost in zone 7a?

No — winter squash is frost-sensitive. In zone 7a, wait until after the last frost (around Apr 15) to plant, and harvest before the first fall frost (around Oct 25).

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