When to plant scallion in zone 6b — planting calendar

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Showing USDA Zone 6B

Growing SeasonZone 6b

Last frost ~Apr 20First frost ~Oct 15Today

Start indoorsTransplant / sowHarvestFrost risk

MARAPRMAYJUNJUL

Sow Mar 30 · First harvest May 29 · Wrap by Jul 10

Last spring frostApr 20

Direct sowMar 30

First harvestMay 29

Last harvestJul 10

Fall succession sowAug 20

First fall frostOct 15

Why these dates work in zone 6b

Zone 6b's last spring frost averages Apr 20 and first fall frost Oct 15 — about 178 frost-free days. Scallion 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 20 for a second harvest before frost.

Common questions

How long does scallion take to grow in zone 6b?

Scallion matures in about 60–70 days from sowing. In zone 6b that means sowing around Mar 30 and first picking around May 29.

Will scallion survive frost in zone 6b?

Yes — scallion tolerates light frost. In zone 6b you can sow a little before the last frost (around Apr 20) and keep harvesting past the first fall frost (around Oct 15).

Can I plant a second crop of scallion in zone 6b?

Yes — in zone 6b there's time for a fall sowing around Aug 20 for a second harvest before frost.

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