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USDA Plant Hardiness Zone Map
Indicator Plant Examples
Listed by: ZONE
Cold Hardiness Ratings for Selected Woody Plants
Representative plants listed under the coldest zones
in which they normally succeed
Zone Ratings -- Average Annual Minimum Temperature Range
1
& 2 3 & 4
5 & 6 7 & 8
9 & 10
| Zone |
Botanical (and Common) Names |
|
1
Below
-50 °F
Below
-45.6 °C
|
Betula
glandulosa (Dwarf birch)
Empetrum
nigrum (Crowberry)
Populus
fremuloides (Quaking aspen)
Potentilla
pensylvanica (Pennsylvania cinquefoil)
Rhododendron
lapponicum (Lapland rhododendron)
Salix
reticulate (Netleaf willow) |
|
2
-50 to
-40 °F
-45.6
to -40 °C
|
Betula
papyrifera (Paper birch)
Cornus
canadensis (Bunchberry dogwood)
Elaeagnus
commutata (Silverberry)
Larix
laricina (Eastern larch)
Potentilla
fruticosa (Bush cinquefoil)
Viburnum
trilobum (American cranberry bush) |
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| Zone |
Botanical (and Common) Names |
|
3
-40 to -30 °F
-40 to -34.5 °C
|
Berberis
thunbetgii (Japanese bayberry)
Elaeagnus
angustifolia (Russian olive)
Junipercus
communes (Common juniper)
Lonicera
tatarica (Tatarian honeysuckle)
Malus
baocata (Siberian crabapple)
Thuia
occidentalis (American arborvitae) |
|
4
-30 to
-20 °F
-43.5 to -28.9 °C
|
Acer
saccharum (Sugar maple)
Hydrangea
paniculata (Panicle hydrangea)
Juniperus
chinensis (Chinese juniper)
Ligustrum
amurense (Amur River privet)
Parthenocissus
quinquefolia (Virginia creeper)
Spiraea
x vanhouttei (Vanhouffe spirea) |
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| Zone |
Botanical (and Common) Names |
|
5
-20 to
-10 °F
-28.9
to -23.3 °C
|
Cornus
florida (Flowering dogwood)
Deutzia
gracilis (Slender deutzia)
Ligustrum
vulgare (Common privet)
Paithenocissus
tricuspidata (Boston ivy)
Rosa
multiflora (Japanese rose)
Taxus
cuspidata (Japanese yew) |
|
6
-10 to
0 °F
-23.3
to -17.8 °C
|
Acer
palmatum (Japanese maple)
Buxus
sempervirens (Common boxwood)
Euonymus
follunei (Winter creeper)
Hedera
helix (English ivy)
Ilex
opaca (American holly)
Ligustrum
ovalifolium (California privet) |
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| Zone |
Botanical (and Common) Names |
|
7
0 to
10 °F
-17.8
to -12.3 °C
|
Acer
macrophylium (Bigleaf maple)
Rhododendron
Kurume hybrids (Kurume azalea)
Cedrus
atlantica (Atlas cedar)
Cotoneaster
microphylla (Small-leaf cotoneaster)
Ilex
aquifolium (English holly)
Taxus
baccata (English yew) |
|
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) |
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| Zone |
Botanical (and Common) Names |
|
9
20 to
30 °F
-6.6 to
-1.1 °C
|
nbsp; Asparagus
setacous (Asparagus fern)
Eucalyptus
globulus (Tasmanian blue gum)
Syzygium
paniculatum (Australian bush cherry)
Fuchsia
hybrids (Fuchsia)
Grevillea
robusta (Silk-oak)
Schinus
molle (California pepper tree) |
|
10
30 to
40 °F
-1.1 to
4.4 °C
|
Bougainvillea
spectabilis (Bougainvillea)
Cassia
fistula (Golden shower)
Eucalyptus
citriodora (Lemon eucalyptus)
Ficus
elastica (Rubber plant)
Ensete
ventricosum (Ensete)
Roystonea
regia (Royal palm) |
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Go to the USDA Hardiness Zone Map
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
U.S.
National Arboretum, Agricultural Research Service, U.S. Department of Agriculture,
Washington, DC 20002.
Updated and edited,
by Yankee Gardener, February 2001
Back to the USDA Hardiness Zone Map Introduction Page
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