IDAHO FALLS — Gardeners often talk about ... While earlier maps were created, the USDA hardiness zone map was first published in 1960. The hardiness zone is based on the average coldest ...

W henever you purchase a new perennial plant, shrub, or tree, you've probably noticed information about hardiness zones on the plant tag or description. But what does it mean? "Pl ...

John Fech knows there are a lot of excited gardeners after the USDA release of an updated plant hardiness zone map. Omaha’s move from a 5B classification to 6A opens up the area to the ...