Ash, Mountain
Symptom Cause  
Leaves curled; discolored
Aphids
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Many holes in branches; smaller limbs girdled sawdust at holes
Borers
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Young portions of foliage disappear, or young tips disappear, bark peeled in strips
Deer
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Flowers and shoots wilt suddenly in spring
Fire Blight (bacterial)
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Leaves stippled/yellow/bronze/dry out/drop; webbing visible, leaf galls
Mite
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Rust colored spots on leaves
Rust (on plants)
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Holes in leaves
Sawflies
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Dead spots on leaves; shoots blighted
Scab, Apple
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Small bumps on leaves and branches; growth of tree may be stunted
Scale Insects
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Black powdery sooty mold fungus forms on honeydew; branches may die
Sooty Mold
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