Bagworm
(Thyridopteryx ephemeraeformis)
Botryosphaeria Canker
(Botryosphaeria spp)
Buck Moth
(Hemileuca maia)
Catalpa Sphinx
(Ceratomia catalpae)
Drought
Eastern Tent Caterpillar
(Malacosoma americanum)
Elm Leaf Beetle
(Pyrrhalta luteola)
Elm Spanworm
(Ennomos subsignarius)
Emerald Ash Borer
(Agrilus plannipennis)
Endothia Canker
(Endothia gyrosa)
Entomosporium Leaf Spot
(Entomosporium spp)
Euonymus Scale
(Unaspis euonymii)
Fall Webworm
(Hyphantria cunea)
Fireblight
(Erwinia amylovora)
Forest Tent Caterpillar
(Malacosoma disstria)
Greenstriped Mapleworm
(Dryocampa rubicunda)
Herbicide Damage
Improper Planting
Improper Pruning
Japanese Beetle
(Popillia japonica)
Larger Elm Leaf Beetle
(Monocesta coryli)
Leaf Scorch
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Leaf Spots (Maple-Sycamore)
(Rhytisma acerinum)
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Leaf Spots (Oak)
(Tubakia quercina)
Lecanium Scale
(Coccus hesperidium)
Linden Looper
(Erannis tilaria)
Mechanical Damage
Nutrient Deficiency
Oak Leaf Blister
(Taphrina caerulescens)
Oak Leafroller
(Archips semiferana)
Oak Skeletonizer
(Bucculatrix ainsliella)
Orangestriped Oakworm
(Anisota senatoria)
Overwatering
Phomopsis Canker
(Phomopsis spp.)
Phomopsis Tip Blight
(Phomopsis juniperovora)
Phytophtora Root Rot
(Phytophtora spp.)
Pinkstriped Oakworm
(Anisota virginiensis)
Soapberry Borer
(Agrilus prionurus)
Soil Compaction
Sphaeropsis Tip Blight
(Sphaeropsis sapinea)
Spider Mites
(Tetranynchus urticae)
Spiny Oakworm
(Anisota stigma)
Underwatering
Walnut Caterpillar
(Datana integerrima)
Winter Burn