What plant hardiness zone is Sioux Falls

Sioux Falls is located at Minnehaha County, South Dakota (SD), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Sioux Falls 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.

Sioux Falls, South Dakota @ wikipedia.