What plant hardiness zone is Swift
Swift is located at Roseau County, Minnesota (MN), USA.
Plant hardiness zone (winter frost zone or gardening zone) for Swift 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.
Swift, Minnesota @ wikipedia.