Beech, European
Symptom Cause  
Leaves curled and distorted
Aphids
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Limbs die; large holes appear; starting at top of tree
Asian Longhorn Beetle
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Many holes in branches; small limbs girdled sawdust at holes
Borers
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Swollen; bleeding lesions on stems/trunk
Canker (fungus)
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Holes in leaves
Caterpillars
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Young portions of foliage disappear, or young tips disappear, bark peeled off
Deer
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On young trees, foliage looks burned
Dog Urine
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Leaves appear spotted; then scorched
Leaf Mottle
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Holes in leaves
Loopers
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Leaves covered with white powder
Powdery Mildew
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Bark of stems and roots gnawed
Rodent Injury
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Small bumps on leaves and branches
Scale Insects
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Black powdery sooty mold fungus forms on honeydew; branches may die
Sooty Mold
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