pinterest-circle facebook-circle twitter-circle instagram-circle ss-standard-direct-right ss-standard-cart ss-standard-close ss-standard-exit ss-standard-notebook ss-standard-redirect ss-standard-rows ss-standard-search ss-standard-user delivery-truckarrow-right-line
orders cart log in search
Donate
Differences between 1990 USDA hardiness zones and 2015 arborday.org hardiness zones

Much of the U. S. has been warmer in recent years, and that affects which trees are right for planting. The Arbor Day Foundation has recently completed an extensive updating of U.S. Hardiness Zones based upon data from 5,000 National Climatic Data Center cooperative stations across the continental United States.


This work is licensed under a Creative Commons Attribution-No Derivative Works 2.5 License.