When do you plant mustard in zone 1b?

In USDA hardiness zone 1b (last frost ~May 29, 2026, first frost ~Aug 28, 2026): Direct sow outdoors May 31, 2026–Sep 27, 2026. Exact dates vary by location within the zone.

When to plant mustard in zone 1b

A planting schedule for mustard 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.

Mustard planting schedule for zone 1b

Direct sow outdoorsMay 31, 2026 – Sep 27, 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 mustarddates 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 mustard growing guide or the whole zone 1b calendar.

Mustard in other zones

Zone 4b
Zone 5b
Zone 6b
Zone 7b
Zone 8b
Zone 9b

More crops for zone 1b

Leek
Onion
Celery
Arugula
Collard
Kale
Parsley
Beet
Broccoli
Brussels Sprouts
Cabbage
Cauliflower

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.