When to plant winter squash (butternut) in zone 6b
A planting schedule for winter squash (butternut) in USDA hardiness zone 6b, where the typical last spring frost is around Apr 23, 2026 and the first fall frost around Oct 21, 2026. Dates are computed from NOAA frost normals for a representative location (ZIP 01509) — your exact dates depend on your address.
Winter Squash (Butternut) planting schedule for zone 6b
- Start seeds indoorsApr 13, 2026 – Sep 30, 2026
- Start hardening offMay 1, 2026 – Oct 14, 2026
- Transplant outdoorsMay 11, 2026 – Oct 21, 2026
Playing it safe with tender crops? Spring frost holds off until about May 4, 2026 in roughly 9 years out of 10.
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Winter Squash (Butternut) in other zones
More crops for zone 6b
Frost dates are NOAA 1991–2020 climate normals for a representative location (ZIP 01509) in zone 6b; your exact dates depend on your address. Schedules are guidance, not guarantees.