Spruce, Serbian
Symptom Cause  
Needles wrinkled or curled; discolored, stunted, tend to fall off; galls on shoots
Aphids
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Leaves defoliated; foliage looks bad; silken cocoon-like bags hang on twigs; twigs girdled
Bagworms
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Many holes in trunk and branches; small limbs girdled sawdust at holes
Borers
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Wilting; new growth deformed
Budworm
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Branch die back; needle drop; cankers
Canker (fungus)
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When young portions of foliage disappear, or young tips disappear; shredded bark on trunk
Deer
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Shelf-like growth erupts from trunks
Lichens
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Leaves stippled, yellow/bronze; dry out and drop, webbing visible; galls on leaves
Mite
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Bark of tree and roots gnawed
Rodent Injury
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Blistered; discolored needles
Rust (on plants)
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Small caterpillars, usually in high numbers, grouped together, foliage being eaten
Sawflies
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Black powdery sooty mold fungus forms on honeydew; branches may die
Sooty Mold
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Needles webbed together; larvae mine the needles, which eventually turn brown
Spruce Needle Miners
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