What plant hardiness zone is Big Stone City

Big Stone City is located at Grant County, South Dakota (SD), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Big Stone City 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.

Big Stone City, South Dakota @ wikipedia.