The importance of hardiness zones lies in their ability to help gardeners and farmers choose plants that will thrive in their ...

Heat-trapping pollutants in the atmosphere are causing the planet to warm. This is causing plant hardiness zones to shift north, impacting what kinds of plants can be grown where. Plant hardiness ...

Trees near the southern edge of their geographic ranges — what scientists refer to as “plant hardiness zones” — will be left behind, while northern latitudes will welcome new species from ...