When to Plant Butternut Squash in Zone 8a

Cucurbita moschata

Last updated: May 15, 2026 · Sources: USDA, NOAA, Cooperative Extension
Action Plan

Plant Butternut Squash in Zone 8a

  • Start indoors: Mar 13
  • Transplant: Apr 10 — after last frost (Mar 27)
  • First harvest: Jul 11 (85–110 days)
⚠️ Zone 8a last frost: Mar 27. Don't plant frost-sensitive crops before this date.
Last frost
Mar 27
First frost
Oct 29
Growing season
216 days
Zone 8a is the colder half of Zone 8

Zone 8a has a last frost around Mar 27 and first frost around Oct 29, giving you approximately 216 growing days. This is about 2 weeks shorter than Zone 8b. For more details see the Zone 8 complete guide.

Other Zones for Butternut Squash

Zone 3Zone 4Zone 5Zone 6Zone 7Zone 8Zone 9Zone 10
📚 Data Sources
Frost dates: NOAA Climate Normals 1991–2020, National Centers for Environmental Information.
Hardiness zones: USDA Plant Hardiness Zone Map, Agricultural Research Service.
Growing requirements: Cooperative Extension Services — NC State, Penn State, University of Florida IFAS.
Companion planting: Cornell University Cooperative Extension.
Data compiled from public agricultural sources. Always verify with your local extension office for micro-climate adjustments.