  Go to Hardiness Zone Map at this site or click the pictured links above for usda.gov. Listed by Zone |
| Go to Hardiness Zone Map at this site or click the pictured links above for usda.gov. Listed by Zone |
|
Go to Hardiness Zone Map. |
|
Representative plants are listed under the coldest zones in which they normally succeed |
|
|
Zone
1
Below -45.6 C Below -50 F Betula glandulosa (Dwarf
birch)
|
Zone
6
-10 to 0 F -23.3 to -17.8 C Acer palmatum (Japanese maple)
|
|
Zone
2
-50 to -40 F -45.6 to -40 C Betula papyrifera (Paper
birch)
|
Zone
7
0 to 10 F -17.8 to -12.3 C Acer macrophylium (Bigleaf
maple)
|
|
Zone
3
-40 to -30 F -40 to -34.5 C Berberis thunbetgii
(Japanese bayberry)
|
Zone
8
10 to 20 F -12.3 to -6.6 C Arbutus unedo (Strawberry tree) Choisya temata (Mexican orange) Olearia haastii (New Zealand daisy-bush) Pittosporum tobira (Japanese pittosporum) Prunus laurocerasus (Cherry-laurel) Viburnum tinus (Laurestinus) |
|
Zone
4
-30 to -20 F -34.5 to -28.9 C Acer saccharum (Sugar maple)
|
Zone
9
20 to 30 F -6.6 to -1.1 C Asparagus setacous
(Asparagus fern)
|
|
Zone
5
-20 to -10 F -28.9 to -23.3 C Cornus florida (Flowering
dogwood)
|
Zone
10
30 to 40 F -1.1 to 4.4 C Bougainvillea spectabilis
(Bougainvillea)
|
| 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.
http://www.usna.usda.gov/Hardzone/ushmap.html |
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