Select Suspected Cause

Anthracnose (Ash)

Anthracnose (Ash)
(Discula fraxinus)
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.)
Emerald Ash Borer

Emerald Ash Borer
(Agrilus plannipennis)
Redheaded Ash Borer

Redheaded Ash Borer
(Neoclytus acuminatus)
Elm Spanworm

Elm Spanworm
(Ennomos subsignarius)
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
     
Botryosphaeria Canker

Botryosphaeria Canker
(Botryosphaeria spp)
Ambrosia Beetles

Ambrosia Beetles
(Scolytinae: Xyleborini)