Map developers from USDA and Oregon State University, updated the plant hardiness zoning for half of the country based on 30 years of climate data.

Arizona mostly holds ground, but plant hardiness zones get major national adjustments Nov 18, 2023, 6:20 PM | Updated: Nov 20, 2023, 12:30 pm Southwest U.S. plant hardiness zones.

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 ...

The Republic reviewed building codes for 40 Arizona cities and assigned each a climate score based on the efforts being made to make housing more sustainable.

Climate scientists prefer to use 50-100-year time spans to measure climate change, federal officials said. Changes like this are what you would expect in a warming world ...

The U.S. Department of Agriculture’s Plant Hardiness Zone Map, updated Wednesday, shows the impact that climate change will have on gardens and yards across the country.

I was asked by several people about my reaction to the change in the USDA’s plant hardiness zone map in 2023. I prefer to use Sunset’s Western Garden climate zone maps.

Boston University plant ecologist Richard Primack, who was not involved in the map project, said, “Half the U.S. has shifted to a slightly warmer climatic zone than it was 10 years ago." ...