USDA Updates Plant Hardiness Map With Many Areas Moving Into Warmer Zones
The U.S. Department of Agriculture has updated its Plant Hardiness Zone map, a map of the U.S. that helps gardeners decide what plants will grow best in their local areas, based on average annual extreme minimum winter temperature. The updates show an average of 2.5°F warmer across the contiguous U.S. compared to the previous map, […]