When to plant winter squash (acorn) in zone 6b
A planting schedule for winter squash (acorn) in USDA hardiness zone 6b, where the typical last spring frost is around Apr 22, 2026 and the first fall frost around Oct 20, 2026. Dates are computed from NOAA frost normals for a representative location (Cisco, UT) — your exact dates depend on your address.
Winter Squash (Acorn) planting schedule for zone 6b
- Start seeds indoorsApr 16, 2026 – Sep 29, 2026
- Start hardening offMay 4, 2026 – Oct 13, 2026
- Transplant outdoorsMay 14, 2026 – Oct 20, 2026
Playing it safe with tender crops? Spring frost holds off until about May 7, 2026 in roughly 9 years out of 10.
Zone 6b covers a lot of ground. Enter your ZIP for winter squash (acorn) dates worked out from your nearest weather station:
Free on one garden — no credit card. See the full winter squash (acorn) growing guide or the whole zone 6b calendar.
Winter Squash (Acorn) in other zones
More crops for zone 6b
Frost dates are NOAA 1991–2020 climate normals for a representative location (Cisco, UT) in zone 6b; your exact dates depend on your address. Schedules are guidance, not guarantees.