What plant hardiness zone is Kettle River

Kettle River is located at Carlton County, Minnesota (MN), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Kettle River is 3b by the USDA scale.

Coldest zone's winter temperature is −35 … -30 °F.

Plants of 3b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 3b USDA.

Kettle River, Minnesota @ wikipedia.