Minor pest to
Abies balsamea (Balsam Fir)
Abies grandis (Grand Fir)
Abies lasiocarpa (Subalpine Fir)
Alnus incana (Grey Alder)
Betula pendula (Silver Birch)
Corylus avellana (Hazelnuts)
Malus domestica (Apples)
Pinus ponderosa (Ponderosa Pine)
Pinus strobus (White Pine)
Populus tremuloides (American Aspen - Poplar)
Prunus avium (Cherries)
Prunus salicina (Japanese Plum)
Salix alba (White Willow)
Salix caprea (Goat Willow)
Sorbus aucuparia (Mountain Ash)
Tilia cordata (Small Leaved Lime)