Listed by zone. -- Names of representative plants
listed under the coldest zones in which they normally succeed.
Listed alphabetically. -- Cold hardiness ratings
(zones) for selected woody plants.
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.