Much of the United States has been warmer in recent years, and that affects which trees are right for planting. Based on the latest comprehensive weather station data, The National Arbor Day Foundation has just released a new 2006 arborday.org Hardiness Zone Map which separates the country into ten different temperature zones to help people select the right trees to plant where they live. The new map reflects that many areas have become warmer since 1990 when the last USDA hardiness zone map was published. Significant portions of many states have shifted at least one full hardiness zone.

News notes are courtesy of Southern Forests Network News Notes
www.southernsustainableforests.org<