Hypoxylon Canker
(Hypoxylon tinctor)
Armillaria Root Rot
(Armillaria spp.)
Leafy Mistletoe
(Phoradendron tomentosum)
Structural Root Rot
(Ganoderma sp.)
Drought
Frost Crack
Herbicide Damage
Lightning Damage
Underwatering
Soil Compaction
Improper Pruning
Improper Planting
Phytophthora Root Rot
(Phytophthora spp.)
Twig Girdler
(Oncideres pustulatus)
Botryosphaeria Canker
(Botryosphaeria spp)
Ambrosia Beetles
(Scolytinae: Xyleborini)