When to plant scorzonera in zone 4a — planting calendar

Not your zone?

Showing USDA Zone 4A

Growing SeasonZone 4a

Last frost ~May 20First frost ~Sep 20Today

Start indoorsTransplant / sowHarvestFrost risk

APRMAYJUNJULAUGSEP

Sow May 6 · First harvest Sep 3 · Wrap by Sep 20

Last spring frostMay 20

Direct sowMay 6

First harvestSep 3

Last harvestSep 20

First fall frostSep 20

Why these dates work in zone 4a

Zone 4a's last spring frost averages May 20 and first fall frost Sep 20 — about 123 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 4a?

Scorzonera matures in about 120–150 days from sowing. In zone 4a that means sowing around May 6 and first picking around Sep 3.

Will scorzonera survive frost in zone 4a?

Yes — scorzonera tolerates light frost. In zone 4a you can sow a little before the last frost (around May 20) and keep harvesting past the first fall frost (around Sep 20).

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