When to plant scorzonera 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

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Sow May 1 · First harvest Aug 29 · Wrap by Sep 25

Last spring frostMay 15

Direct sowMay 1

First harvestAug 29

Last harvestSep 25

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. Scorzonera 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 scorzonera take to grow in zone 4b?

Scorzonera matures in about 120–150 days from sowing. In zone 4b that means sowing around May 1 and first picking around Aug 29.

Will scorzonera survive frost in zone 4b?

Yes — scorzonera 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).

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