A hardiness zone is a geographic area with a similar average minimum temperature. The map is based on the average annual ...
"The hardiness zones are determined based on the average ... "Compared to the 2012 maps, Ohio has much less zone 5b in the most recent map. This is not to say that we still don't experience ...
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 ...