New Hardiness Zones Reflect Warmer U.S. Temps

The National Arbor Day Foundation has posted a new 2006 Hardiness Zone map. Along with this map is a comparison map of 1990 versus 2006 Hardiness Zones, which reflects warming temperatures across the United States.

From the NADF press release:

"Much of Illinois, Indiana, and Ohio...have shifted from Zone 5 to a warmer Zone 6. Some areas around the country have even warmed two full zones."