Select Suspected Cause

Bacterial Leaf Scorch

Bacterial Leaf Scorch
(Xylella fastidiosa subsp. Multiplex)
Leaf Spots (Maple-Sycamore)

Leaf Spots (Maple-Sycamore)
(Rhytisma acerinum)
Armillaria Root Rot

Armillaria Root Rot
(Armillaria spp.)
Leafy Mistletoe

Leafy Mistletoe
(Phoradendron tomentosum)
Structural Root Rot

Structural Root Rot
(Ganoderma sp.)
Powdery Mildew

Powdery Mildew
(Oidium sp.)
Black Twig Borer

Black Twig Borer
(Xylosandrus compactus)
Fall Webworm

Fall Webworm
(Hyphantria cunea)
Pinkstriped Oakworm

Pinkstriped Oakworm
(Anisota virginiensis)
Greenstriped Mapleworm

Greenstriped Mapleworm
(Dryocampa rubicunda)
Japanese Beetle

Japanese Beetle
(Popillia japonica)
Linden Looper

Linden Looper
(Erannis tilaria)
Drought

Drought
     
Leaf Scorch

Leaf Scorch
     
Nutrient Deficiency

Nutrient Deficiency
     
Herbicide Damage

Herbicide Damage
     
Lightning Damage

Lightning Damage
     
Underwatering

Underwatering
     
Overwatering

Overwatering
     
Soil Compaction

Soil Compaction
     
Improper Pruning

Improper Pruning
     
Improper Planting

Improper Planting
     
Mechanical Damage

Mechanical Damage
     
Phytophthora Root Rot

Phytophthora Root Rot
(Phytophthora spp.)
Botryosphaeria Canker

Botryosphaeria Canker
(Botryosphaeria spp)
Ambrosia Beetles

Ambrosia Beetles
(Scolytinae: Xyleborini)