The 2003 US National Arboretum "Web Version" of the USDA Plant Hardiness Zone Map
USDA Miscellaneous Publication No. 1475, Issued January 1990
USDA
Miscellaneous Publication No. 1475. Issued January 1990.
Authored
by Henry M. Cathey while Director, U.S. National Arboretum
Edited,
formatted and prepared for the US National Arboretum web site by Ramon
Jordan, March 1998 & Revised March 2001
U.S. National Arboretum, Agricultural Research Service, U.S. Department of Agriculture,
Washington, DC 20002
** Special thanks to Jody Shuart and Scott Bauer, ARS Information Staff
Note: This publication is not copyrighted, and permission to reproduce all or any part of it is not required.
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Last Updated February 23, 2004 1:04 PM
URL = http://www.usna.usda.gov/Hardzone/ushmap.html