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On Nov. 15, the U.S. Department of Agriculture released a revised version of its Plant Hardiness Zone Map. This map is what home gardeners, as well as professional growers, use to determine which ...

Tim Kohlhauff remembers the days when his hometown of Spokane, Washington was in zone 5b on the Plant Hardiness Zone Map. When he was growing up, daisies, rhododendrons, and azaleas were always ...

For the first time since 2012, a new Plant Hardiness Zone Map has been released by the U.S. Department of Agriculture. The map, released Nov. 15, 2023, is a tool used by gardeners and growers around ...