When do you plant winter squash (butternut) in zone 7b?

In USDA hardiness zone 7b (last frost ~Apr 5, 2026, first frost ~Nov 1, 2026): Start seeds indoors Mar 31, 2026–Oct 11, 2026; Start hardening off Apr 18, 2026–Oct 25, 2026; Transplant outdoors Apr 28, 2026–Nov 1, 2026. Exact dates vary by location within the zone.

When to plant winter squash (butternut) in zone 7b

A planting schedule for winter squash (butternut) in USDA hardiness zone 7b, where the typical last spring frost is around Apr 5, 2026 and the first fall frost around Nov 1, 2026. Dates are computed from NOAA frost normals for a representative location (Friendsville, TN) — your exact dates depend on your address.

Winter Squash (Butternut) planting schedule for zone 7b

Start seeds indoorsMar 31, 2026 – Oct 11, 2026
Start hardening offApr 18, 2026 – Oct 25, 2026
Transplant outdoorsApr 28, 2026 – Nov 1, 2026

Playing it safe with tender crops? Spring frost holds off until about Apr 21, 2026 in roughly 9 years out of 10.

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Winter Squash (Butternut) in other zones

More crops for zone 7b

Frost dates are NOAA 1991–2020 climate normals for a representative location (Friendsville, TN) in zone 7b; your exact dates depend on your address. Schedules are guidance, not guarantees.