What plant hardiness zone is Roy Lake

Roy Lake is located at Mahnomen County, Minnesota (MN), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Roy Lake 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.

Roy Lake, Minnesota @ wikipedia.