Major hosts
Quercus alba (white oak), Quercus coccinea (scarlet oak), Quercus ellipsoidalis (Northern pin oak), Quercus garryana (Garry oak), Quercus ilex (holm oak), Quercus lobata (California white oak), Quercus montana (basket oak), Quercus muehlenbergii (Chinquapin oak), Quercus palustris (pin oak), Quercus petraea (durmast oak), Quercus robur (common oak), Quercus rubra (northern red oak), Quercus suber (cork oak), Quercus velutina (black oak)

Minor hosts
Acer (maples), Acer negundo (box elder), Acer platanoides (Norway maple), Acer rubrum (red maple), Acer saccharinum (soft maple), Acer saccharum (sugar maple), Alnus (alders), Alnus rhombifolia (white alder), Betula (birches), Betula alleghaniensis (yellow birch), Betula lenta (sweet birch), Betula papyrifera (paper birch), Betula populifolia (gray birch), Carpinus (hornbeams), Carya (hickories), Castanea sativa (chestnut), Corylus, Eucalyptus camaldulensis (red gum), Fagus (beeches), Fagus grandifolia (American beech), Fagus sylvatica (common beech), Fraxinus americana (white ash), Fraxinus pennsylvanica (downy ash), Glycine max (soyabean), Hamamelis virginiana (Virginian witch-hazel), Larix (larches), Larix kaempferi (Japanese larch), Larix occidentalis (western larch), Liquidambar styraciflua (Sweet gum), Litchi chinensis (lichi), Lithocarpus edulis, Malus (ornamental species apple), Malus domestica (apple), Ostrya virginiana (American hophornbeam), Picea abies (common spruce), Picea jezoensis (Yeddo spruce), Pinus (pines), Pinus contorta (lodgepole pine), Pinus echinata (shortleaf pine), Pinus resinosa (red pine), Pinus rigida (pitch pine), Pinus strobus (eastern white pine), Pinus sylvestris (Scots pine), Pinus taeda (loblolly pine), Pistacia vera (pistachio), Platanus acerifolia (London planetree), Populus (poplars), Populus grandidentata (Bigtooth aspen), Populus nigra (black poplar), Populus tremuloides (trembling aspen), Prunus (stone fruit), Prunus armeniaca (apricot), Prunus domestica (plum), Prunus serotina (black cherry), Prunus serrulata (Japanese flowering cherry), Pseudotsuga menziesii (Douglas-fir), Pyrus (pears), Quercus ilicifolia (bear oak), Robinia (locust), Robinia pseudoacacia (black locust), Salix (willow), Salix babylonica (weeping willow), Taxodium distichum (bald cypress), Tilia americana (basswood), Tilia cordata (small-leaf lime), Vaccinium (blueberries), Zea mays (maize)

Hosts where status is unknown
Salix fragilis (crack willow)