USDA hardiness zone 3b
In zone 3b the average coldest winter night reaches -35°F to -30°F. Plants labeled for zone 3 (or a colder zone) can survive the winter outdoors here. 2 U.S. cities with 10,000+ residents are in this zone.
In zone 3b the average coldest winter night reaches -35°F to -30°F. Plants labeled for zone 3 (or a colder zone) can survive the winter outdoors here. 2 U.S. cities with 10,000+ residents are in this zone.