When to plant basil 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

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Start indoors Feb 25 · Sow Apr 8 · First harvest May 3 · Wrap by Jul 26

Last spring frostMar 25

Start seeds indoorsFeb 25

Direct sowApr 8

First harvestMay 3

Last harvestJul 26

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. Basil 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 basil take to grow in zone 8a?

Basil matures in about 25–35 days from sowing. In zone 8a that means sowing around Apr 8 and first picking around May 3.

Will basil survive frost in zone 8a?

No — basil 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 basil growing guide →