Some plants are adapted to survive cold winters ... For additional accuracy, each zone is sometimes split into two subzones, zone 6a and 6b, for example, but this level of detail is not always ...

Pennsylvania falls within the defined USDA Northeast region of the U.S.: the western Pennsylvania specific USDA Planting Zone is 6 (6a and 6b). This means that plants should be selected that can ...

meaning plants that may do well in Milwaukee may not be as suited to cities like Superior. Plant hardiness zones in Wisconsin range from 6a, which denotes an average minimum temperature of -5 to ...