What plant hardiness zone is Marion
Marion is located at McDowell County, North Carolina (NC), USA.
Plant hardiness zone (winter frost zone or gardening zone) for Marion is 7b by the USDA scale.
Coldest zone's winter temperature is +5 … +10 °F.
Plants of 7b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 7b USDA.
Marion, North Carolina @ wikipedia.