When to plant mustard greens in zone 4a — planting calendar

Growing SeasonZone 4a

Last frost ~May 7First frost ~Oct 13Today

Start indoorsTransplant / sowHarvestFrost risk

MARAPRMAYJUN

Sow Apr 9 · First harvest May 4 · Wrap by Jun 1

Last spring frostMay 7

Direct sowApr 9

First harvestMay 4

Last harvestJun 1

Fall succession sowSep 1

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. Mustard Greens 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 Sep 1 for a second harvest before frost.

Common questions

How long does mustard greens take to grow in zone 4a?

Mustard Greens matures in about 25–40 days from sowing. In zone 4a that means sowing around Apr 9 and first picking around May 4.

Will mustard greens survive frost in zone 4a?

Yes — mustard greens 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 mustard greens in zone 4a?

Yes — in zone 4a there's time for a fall sowing around Sep 1 for a second harvest before frost.

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

View another zone