What plant hardiness zone is Tower

Tower is located at Saint Louis County, Minnesota (MN), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Tower is 3a by the USDA scale.

Coldest zone's winter temperature is −40 … -35 °F.

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