What plant hardiness zone is New Athens

New Athens is located at St. Clair County, Illinois (IL), USA.

Plant hardiness zone (winter frost zone or gardening zone) for New Athens is 6b by the USDA scale.

Coldest zone's winter temperature is −5 … 0 °F.

Plants of 6b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6b USDA.