When to plant dill 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

MAYJUNJULAUG

Sow May 11 · First harvest Jun 20 · Wrap by Aug 15

Last spring frostMay 25

Direct sowMay 11

First harvestJun 20

Last harvestAug 15

Fall succession sowJul 28

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. Dill 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 28 for a second harvest before frost.

Common questions

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

Dill matures in about 40–55 days from sowing. In zone 3b that means sowing around May 11 and first picking around Jun 20.

Will dill survive frost in zone 3b?

Yes — dill 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).

Can I plant a second crop of dill in zone 3b?

Yes — in zone 3b there's time for a fall sowing around Jul 28 for a second harvest before frost.

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