Armillaria Root Rot
(Armillaria spp.)
Structural Root Rot
(Ganoderma sp.)
Frost Crack
Lightning Damage
Soil Compaction
Improper Pruning
Mechanical Damage
Improper Mulching
Phytophthora Root Rot
(Phytophthora spp.)
Botryosphaeria Canker
(Botryosphaeria spp)
Ambrosia Beetles
(Scolytinae: Xyleborini)