In this zone, average annual minumum temperatures of -34.4C to -28.9C are to be expected. Plants hardy to this zone are able to tolerate these extremes.
USDA zone 4
Showing 61–108 of 108 results
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Picea engelmannii ssp. mexicana
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Picea glauca
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Picea glauca var. albertiana
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Picea glauca var. glauca
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Picea glehnii
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Picea jezoensis
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Picea jezoensis ssp. hondoensis
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Picea jezoensis ssp. jezoensis var. jezoensis
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Picea jezoensis ssp. jezoensis var. komarovii
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Picea mariana
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Picea obovata
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Picea pungens
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Picea rubens
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Picea schrenkiana
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Picea schrenkiana ssp. schrenkiana
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Picea schrenkiana ssp. tianschanica
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Pinus albicaulis
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Pinus aristata
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Pinus banksiana
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Pinus cembra
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Pinus flexilis
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Pinus flexilis var. flexilis
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Pinus flexilis var. reflexa
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Pinus koraiensis
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Pinus longaeva
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Pinus monticola
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Pinus mugo
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Pinus mugo ssp. mugo
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Pinus mugo ssp. rotundata
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Pinus ponderosa
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Pinus ponderosa var. ponderosa
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Pinus ponderosa var. scopulorum
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Pinus pumila
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Pinus resinosa
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Pinus rigida
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Pinus strobus
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Pinus strobus var. strobus
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Pinus sylvestris
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Pinus sylvestris var. hamata
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Pinus sylvestris var. mongolica
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Pinus sylvestris var. sylvestris
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Taxus canadensis
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Thuja occidentalis
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Tsuga canadensis
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Tsuga mertensiana
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Tsuga mertensiana ssp. grandicona
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Tsuga mertensiana ssp. mertensiana var. jeffreyi
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Tsuga mertensiana ssp. mertensiana var. mertensiana