Projected change in plant hardiness zones Click to select time period Click to select time periodPlant hardiness zones represent the 30-year average of the coldest temperature at each location across the country. Will your town’s hardiness zone change? The hardiness zone projections were produced by Stephen N. Matthews, Louis R. Iverson, Matthew P. Peters and Anantha M. Prasad. I got the list of U.S. city coordinates from this GitHub repository and matched them to coordinates in the hardiness zone data. The list of tree species and their hardiness zones was provided by the Davey Tree Expert Company.

Source: Washington Post April 26, 2023 15:22 UTC