| |
In January 2012, the United States Department of Agriculture (USDA)
released an updated version of their
Plant Hardiness Zone Map Oregon State University’s PRISM
Climate Group used sophisticated mapping technology and 30 years of
meteorological data to create this new web-friendly version. First
published in 1960 and updated in 1990, this map is designed to help
gardeners and growers determine which plants will "winter over" in
their hardiness zone.
Because heat is also an important factor in determining which plants
will survive in a given region, the American Horticultural Society
developed the
Plant Heat Zone Map to provide guidelines for the
other end of the temperature spectrum.
7931 East
Boulevard Drive - Alexandria, VA 22308
(V) 703.768.5700 - Toll Free: 1.800.777.7931
(F) 703.768.8700 - Publications Fax: 703.768.7533
Copyright © 1998-2012 American
Horticultural Society. All rights reserved.
Requests for permission may be submitted to
webmaster@ahs.org.
|
