This week’s North Texas weather highlights the problem with hardiness zone map

The 1990 map was still pretty accurate. It still showed us to be in Zone 7. But when an update was published in 2014, it ...
KOIN 6

Portland gardeners beware: USDA updates plant hardiness zones

PORTLAND, Ore. (KOIN) — Plant enthusiasts and gardeners alike should be aware of the changes made to the USDA’s plant hardiness zones. The hardiness zone update by the USDA is the first adjustment in ...