When to plant spinach 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

MARAPRMAYJUN

Sow Mar 23 · First harvest Apr 29 · Wrap by May 27

Last spring frostApr 20

Direct sowMar 23

First harvestApr 29

Last harvestMay 27

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. Spinach 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 spinach take to grow in zone 6b?

Spinach matures in about 37–50 days from sowing. In zone 6b that means sowing around Mar 23 and first picking around Apr 29.

Will spinach survive frost in zone 6b?

Yes — spinach 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 spinach 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 spinach growing guide →