When to plant parsnip in zone 3b — planting calendar

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Showing USDA Zone 3B

Growing SeasonZone 3b

Last frost ~May 25First frost ~Sep 15Today

Start indoorsTransplant / sowHarvestFrost risk

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Sow Apr 27 · First harvest Aug 5 · Wrap by Sep 15

Last spring frostMay 25

Direct sowApr 27

First harvestAug 5

Last harvestSep 15

First fall frostSep 15

Why these dates work in zone 3b

Zone 3b's last spring frost averages May 25 and first fall frost Sep 15 — about 113 frost-free days. Parsnip tolerates light frost, so you can sow ahead of the last-frost date and keep harvesting into the cooler fall.

Common questions

How long does parsnip take to grow in zone 3b?

Parsnip matures in about 100–130 days from sowing. In zone 3b that means sowing around Apr 27 and first picking around Aug 5.

Will parsnip survive frost in zone 3b?

Yes — parsnip tolerates light frost. In zone 3b you can sow a little before the last frost (around May 25) and keep harvesting past the first fall frost (around Sep 15).

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