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.
A lot of what you mentioned will have different effects on different plants, you would need a different map for each one. Lowest average temp seems to work well enough given it’s still widely used.
A lot of what you mentioned will have different effects on different plants, you would need a different map for each one. Lowest average temp seems to work well enough given it’s still widely used.