Hypoxylon Canker
(Hypoxylon tinctor)
Armillaria Root Rot
(Armillaria spp.)
Leafy Mistletoe
(Phoradendron tomentosum)
Structural Root Rot
(Ganoderma sp.)
Powdery Mildew
(Oidium sp.)
Drought
Leaf Scorch
Nutrient Deficiency
Herbicide Damage
Lightning Damage
Underwatering
Overwatering
Soil Compaction
Improper Pruning
Improper Planting
Mechanical Damage
Phytophthora Root Rot
(Phytophthora spp.)
Twig Girdler
(Oncideres pustulatus)
Botryosphaeria Canker
(Botryosphaeria spp)
Ambrosia Beetles
(Scolytinae: Xyleborini)