When to plant radish in zone 6a — planting calendar

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Showing USDA Zone 6A

Growing SeasonZone 6a

Last frost ~Apr 30First frost ~Oct 10Today

Start indoorsTransplant / sowHarvestFrost risk

MARAPRMAY

Sow Apr 2 · First harvest Apr 24 · Wrap by May 8

Last spring frostApr 30

Direct sowApr 2

First harvestApr 24

Last harvestMay 8

Fall succession sowAug 29

First fall frostOct 10

Why these dates work in zone 6a

Zone 6a's last spring frost averages Apr 30 and first fall frost Oct 10 — about 163 frost-free days. Radish tolerates light frost, so you can sow ahead of the last-frost date and keep harvesting into the cooler fall. There's also room for a fall succession sowing around Aug 29 for a second harvest before frost.

Common questions

How long does radish take to grow in zone 6a?

Radish matures in about 22–30 days from sowing. In zone 6a that means sowing around Apr 2 and first picking around Apr 24.

Will radish survive frost in zone 6a?

Yes — radish tolerates light frost. In zone 6a you can sow a little before the last frost (around Apr 30) and keep harvesting past the first fall frost (around Oct 10).

Can I plant a second crop of radish in zone 6a?

Yes — in zone 6a there's time for a fall sowing around Aug 29 for a second harvest before frost.

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