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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)



 
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)



 
  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)



 
  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)



Zone Botanical (and Common) Names
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)
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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Floral Acres
Route 1, Box 26E
French Creek, West Virginia 26218
(304) 924-6462

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