If you look at the USDA climate zone or Sunset climate zone map, you will note that one zone is separated from the next by “average winter temperature.” Zone 1 has the coldest average winter ...

About half of the country moved into a slightly warmer zone in the Agriculture Department’s new “plant hardiness” map, an important guide for gardeners. Climate change may be a factor.

director of the PRISM Climate Group at Oregon State University that jointly developed the map with the USDA. Daly says the new map means about half the country has shifted into a new half zone and ...

Comparing the 2023 map to the previous version from 2012 clearly shows that as climate change warms the Earth, plant hardiness zones are shifting northward. On average, the coldest days of winter ...

director of the PRISM Climate Group and the map’s lead author. The plant hardiness map is divided into a total of 13 zones, each zone representing a 10-degrees-Fahrenheit range of temperatures.

"Consequently, map developers involved in the project cautioned against attributing temperature updates made to some zones as reliable and accurate indicators of global climate change (which is ...

some areas increased two half-zones. More: Climate change is already hurting Michigan's cherry, apple crops — and it could get worse The updated map confirms the on-the-ground experience of ...

The U.S. Department of Agriculture’s ” plant hardiness zone map ” was updated Wednesday for the first time in a decade, and it shows the impact that climate change will have on gardens and ...