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← How to grow parsley
Planting Calendar · Zone 4A

When to plant parsley in zone 4a

In USDA zone 4a, start parsley seeds indoors around Mar 12, transplant outdoors May 21, and harvest from Jul 30.

Growing SeasonZone 4a
Last frost ~May 7First frost ~Oct 13Today
Start indoorsTransplant / sowHarvestFrost risk
MARAPRMAYJUNJULAUGSEPOCT
Start indoors Mar 12 · Sow May 21 · First harvest Jul 30 · Wrap by Oct 13
Last spring frostMay 7
Start seeds indoorsMar 12
Direct sowMay 21
First harvestJul 30
Last harvestOct 13
Fall succession sowAug 4
First fall frostOct 13

Why these dates work in zone 4a

Zone 4a's last spring frost averages May 7 and first fall frost Oct 13 — about 159 frost-free days. Parsley tolerates light frost, so you can sow ahead of the last-frost date and keep harvesting into the cooler fall. Starting seeds indoors 8 weeks ahead gives strong transplants ready the moment the soil warms. There's also room for a fall succession sowing around Aug 4 for a second harvest before frost.

Common questions

How long does parsley take to grow in zone 4a?

Parsley matures in about 70–90 days from sowing. In zone 4a that means sowing around May 21 and first picking around Jul 30.

Will parsley survive frost in zone 4a?

Yes — parsley tolerates light frost. In zone 4a you can sow a little before the last frost (around May 7) and keep harvesting past the first fall frost (around Oct 13).

Can I plant a second crop of parsley in zone 4a?

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

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