What plant hardiness zone is Plum Hill

Plum Hill is located at Washington County, Illinois (IL), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Plum Hill 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.