When to Plant Sweet Potato in Zone 6a

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

Plant Sweet Potato in Zone 6a

  • Start indoors: Mar 18
  • Transplant: May 6 — after last frost (Apr 22)
  • First harvest: Aug 21 (90–120 days)
⚠️ Zone 6a last frost: Apr 22. Don't plant frost-sensitive crops before this date.
Last frost
Apr 22
First frost
Oct 8
Growing season
169 days
Zone 6a is the colder half of Zone 6

Zone 6a has a last frost around Apr 22 and first frost around Oct 8, giving you approximately 169 growing days. This is about 2 weeks shorter than Zone 6b. For more details see the Zone 6 complete guide.

Other Zones for Sweet Potato

Zone 5Zone 6Zone 7Zone 8Zone 9Zone 10Zone 11
📚 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.