The USDA Hardiness Zone Map, the arbiter of cold hardiness for plants, underwent a massive revamping in November, throwing the gardening world into a bit of chaos. As a new gardening season dawns, ...
The USDA’s Plant Hardiness Zone Map divides the country into 13 zones ranging from 1 (the arctic) to 13 (the tropics) to make it easier for gardeners to select plants that can survive the winter in ...