What plant hardiness zone is Mound City

Mound City is located at Campbell County, South Dakota (SD), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Mound City is 4a by the USDA scale.

Coldest zone's winter temperature is −30 … -25 °F.

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

Mound City, South Dakota @ wikipedia.