Midwest (from the Great Lakes down to the Ohio River):
Douglas fir (Pseudotsuga menziesii var. glauca)
Scots pine (Pinus sylvestris)
white pine (Pinus strobes)
Austrian pine (Pinus nigra)
Colorado blue spruce (Picea pungens Engelm.)
Nebraska/Oklahoma:
Scots pine (Pinus sylvestris)
white pine (Pinus strobes)
Colorado blue spruce (Picea pungens Engelm.)
Douglas fir (Pseudotsuga menziesii var. glauca)
South:
Arizona cypress (Cupressus arizonica var. arizonica)
Loblolly pine (Pinus taeda)
Longleaf pine (Pinus palustris )
Sand pine (Pinus clausa)
Spruce pine (Pinus glabra)
Shortleaf pine (Pinus echinata)
West:
Douglas fir (Pseudotsuga menziesii var. glauca)
Noble fir (Abies procera)
Concolor fir (Abies concolor)
Ponderosa pine (Pinus ponderosa)
Rocky Mountain region:
Austrian pine (Pinus nigra)
Scots pine (Pinus sylvestris)
White pine (Pinus strobes)
Ponderosa pine (Pinus ponderosa)
Colorado blue spruce (Picea pungens Engelm.)
Pacific Northwest:
Douglas fir (Pseudotsuga menziesii var. glauca)
Noble fir (Abies procera)
Douglas fir (Pseudotsuga menziesii var. glauca)
Scots pine (Pinus sylvestris)
white pine (Pinus strobes)
Austrian pine (Pinus nigra)
Colorado blue spruce (Picea pungens Engelm.)
Nebraska/Oklahoma:
Scots pine (Pinus sylvestris)
white pine (Pinus strobes)
Colorado blue spruce (Picea pungens Engelm.)
Douglas fir (Pseudotsuga menziesii var. glauca)
South:
Arizona cypress (Cupressus arizonica var. arizonica)
Loblolly pine (Pinus taeda)
Longleaf pine (Pinus palustris )
Sand pine (Pinus clausa)
Spruce pine (Pinus glabra)
Shortleaf pine (Pinus echinata)
West:
Douglas fir (Pseudotsuga menziesii var. glauca)
Noble fir (Abies procera)
Concolor fir (Abies concolor)
Ponderosa pine (Pinus ponderosa)
Rocky Mountain region:
Austrian pine (Pinus nigra)
Scots pine (Pinus sylvestris)
White pine (Pinus strobes)
Ponderosa pine (Pinus ponderosa)
Colorado blue spruce (Picea pungens Engelm.)
Pacific Northwest:
Douglas fir (Pseudotsuga menziesii var. glauca)
Noble fir (Abies procera)














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