What plant hardiness zone is Gann Valley

Gann Valley is located at Buffalo County, South Dakota (SD), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Gann Valley is 4b by the USDA scale.

Coldest zone's winter temperature is −25 … -20 °F.

Plants of 4b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 4b USDA.

Gann Valley, South Dakota @ wikipedia.