When do you plant swiss chard in zone 4a?

In USDA hardiness zone 4a (last frost ~May 12, 2026, first frost ~Oct 3, 2026): Direct sow outdoors Apr 28, 2026–Oct 27, 2026. Exact dates vary by location within the zone.

When to plant swiss chard in zone 4a

A planting schedule for swiss chard in USDA hardiness zone 4a, where the typical last spring frost is around May 12, 2026 and the first fall frost around Oct 3, 2026. Dates are computed from NOAA frost normals for a representative location (Stanton, ND) — your exact dates depend on your address.

Swiss Chard planting schedule for zone 4a

Direct sow outdoorsApr 28, 2026 – Oct 27, 2026

Playing it safe with tender crops? Spring frost holds off until about May 26, 2026 in roughly 9 years out of 10.

Want exact swiss charddates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

Free on one garden — no credit card. See the full swiss chard growing guide or the whole zone 4a calendar.

Swiss Chard in other zones

More crops for zone 4a

Frost dates are NOAA 1991–2020 climate normals for a representative location (Stanton, ND) in zone 4a; your exact dates depend on your address. Schedules are guidance, not guarantees.