Ambrosia Beetles
(Scolytinae: Xyleborini)
Armillaria Root Rot
(Armillaria spp.)
Botryosphaeria Canker
(Botryosphaeria spp)
Buck Moth
(Hemileuca maia)
Carpenterworm
(Prionoxystus robiniae)
Cottonwood Borer
(Plectrodera scalator)
Cottonwood Leaf Beetle
(Chrysomela scripta)
Cottonwood Twig Borer
(Gypsonoma haimbachiana)
Crown Gall
(Agrobacterium tumefeciens)
Dogwood Borer
(Synanthedon scitula)
Drought
Frost Crack
Herbicide Damage
Improper Mulching
Improper Planting
Improper Pruning
Japanese Beetle
(Popillia japonica)
Leaf Scorch
Leafy Mistletoe
(Phoradendron tomentosum)
Lightning Damage
Mechanical Damage
Nutrient Deficiency
Overwatering
Phytophtora Root Rot
(Phytophtora spp.)
Powdery Mildew
(Oidium sp.)
Soil Compaction
Structural Root Rot
(Ganoderma sp.)
Underwatering
Walnut Caterpillar
(Datana integerrima)