When to plant watermelon in zone 8a — planting calendar

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Showing USDA Zone 8A

Growing SeasonZone 8a

Last frost ~Mar 25First frost ~Nov 10Today

Start indoorsTransplant / sowHarvestFrost risk

FEBMARAPRMAYJUNJUL

Start indoors Feb 25 · Transplant Apr 8 · First harvest Jun 17 · Wrap by Jul 8

Last spring frostMar 25

Start seeds indoorsFeb 25

Transplant outApr 8

First harvestJun 17

Last harvestJul 8

First fall frostNov 10

Why these dates work in zone 8a

Zone 8a's last spring frost averages Mar 25 and first fall frost Nov 10 — about 230 frost-free days. Watermelon 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 4 weeks ahead gives strong transplants ready the moment the soil warms.

Common questions

How long does watermelon take to grow in zone 8a?

Watermelon matures in about 70–90 days from transplanting. In zone 8a that means setting plants out around Apr 8 and first picking around Jun 17.

Will watermelon survive frost in zone 8a?

No — watermelon is frost-sensitive. In zone 8a, wait until after the last frost (around Mar 25) to plant, and harvest before the first fall frost (around Nov 10).

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