What plant hardiness zone is Magnolia

Magnolia is located at Rock County, Minnesota (MN), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Magnolia 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.