When to plant peas in zone 4b — planting calendar

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Showing USDA Zone 4B

Growing SeasonZone 4b

Last frost ~May 15First frost ~Sep 25Today

Start indoorsTransplant / sowHarvestFrost risk

MARAPRMAYJUNJUL

Sow Apr 10 · First harvest Jun 4 · Wrap by Jul 9

Last spring frostMay 15

Direct sowApr 10

First harvestJun 4

Last harvestJul 9

Fall succession sowJul 10

First fall frostSep 25

Why these dates work in zone 4b

Zone 4b's last spring frost averages May 15 and first fall frost Sep 25 — about 133 frost-free days. Peas 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 Jul 10 for a second harvest before frost.

Common questions

How long does peas take to grow in zone 4b?

Peas matures in about 55–70 days from sowing. In zone 4b that means sowing around Apr 10 and first picking around Jun 4.

Will peas survive frost in zone 4b?

Yes — peas tolerates light frost. In zone 4b you can sow a little before the last frost (around May 15) and keep harvesting past the first fall frost (around Sep 25).

Can I plant a second crop of peas in zone 4b?

Yes — in zone 4b there's time for a fall sowing around Jul 10 for a second harvest before frost.

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