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.
Miscellaneous Publication No. 1475. Issued January 1990.
by Henry M. Cathey while Director, U.S. National Arboretum
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
This publication is not copyrighted, and permission to reproduce all or
any part of it is not required.