Bacterial Leaf Scorch
(Xylella fastidiosa subsp. Multiplex)
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Leaf Spots (Maple-Sycamore)
(Rhytisma acerinum)
Armillaria Root Rot
(Armillaria spp.)
Structural Root Rot
(Ganoderma sp.)
Powdery Mildew
(Oidium sp.)
Black Twig Borer
(Xylosandrus compactus)
Fall Webworm
(Hyphantria cunea)
Pinkstriped Oakworm
(Anisota virginiensis)
Greenstriped Mapleworm
(Dryocampa rubicunda)
Japanese Beetle
(Popillia japonica)
Linden Looper
(Erannis tilaria)
Drought
Leaf Scorch
Nutrient Deficiency
Herbicide Damage
Lightning Damage
Underwatering
Overwatering
Soil Compaction
Improper Pruning
Improper Planting
Mechanical Damage
Phytophthora Root Rot
(Phytophthora spp.)
Botryosphaeria Canker
(Botryosphaeria spp)
Cynipid Wasp
(Cynipidae)
Ambrosia Beetles
(Scolytinae: Xyleborini)