The USDA's plant hardiness zone map was updated in 2023 ... to be the coldest temperature experienced in that given winter. Ohio is part of 4 hardiness zones, 5b through 7a, on a scale that ...

A hardiness zone is a geographic area with a similar average minimum temperature. The map is based on the average ... found in bathroom wall during Ohio home renovation Forget the bathroom.

A hardiness zone is a geographic area with a similar average minimum temperature. The map is based on the average annual extreme minimum temperature, so people in those areas know which plants can ...