When do you plant swiss chard in zone 1b?

In USDA hardiness zone 1b (last frost ~May 29, 2026, first frost ~Aug 28, 2026): Direct sow outdoors May 17, 2026–Sep 21, 2026. Exact dates vary by location within the zone.

When to plant swiss chard in zone 1b

A planting schedule for swiss chard in USDA hardiness zone 1b, where the typical last spring frost is around May 29, 2026 and the first fall frost around Aug 28, 2026. Dates are computed from NOAA frost normals for a representative location (ZIP 99745) — your exact dates depend on your address.

Swiss Chard planting schedule for zone 1b

Direct sow outdoorsMay 17, 2026 – Sep 21, 2026

Playing it safe with tender crops? Spring frost holds off until about Jun 14, 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 1b calendar.

Swiss Chard in other zones

More crops for zone 1b

Frost dates are NOAA 1991–2020 climate normals for a representative location (ZIP 99745) in zone 1b; your exact dates depend on your address. Schedules are guidance, not guarantees.