Zone 1
Below -45.6
C
Below -50
F
Betula
glandulosa (Dwarf birch)
Empetrum
nigrum (Crowberry)
Populus
fremuloides (Quaking aspen)
Potentilla
pensylvanica (Pennsylvania cinquefoil)
Rhododendron
lapponicum (Lapland rhododendron)
Salix reticulate
(Netleaf willow)
Zone 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)
Zone 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)
Zone 4
-30 to -20
F
-34.5 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)
Zone 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)
Zone 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)
Zone 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)
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 9
20 to 30 F
-6.6 to -1.1
C
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)
Zone 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)
