Spruce, Norway
Symptom Cause  
Needles wrinkled or curled; discolored, stunted, tend to fall off; galls on shoots
Aphids
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Foliage looks bad, small cocoon-like silken bags hang from twigs
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; resinous cankers
Canker (fungus)
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When young portions of foliage disappears, or young tips disappear; shredded bark on trunk
Deer
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Shelf-like growths erupt from trunk
Lichens
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Leaves stippled, yellowing or bronze; dry out and drop may be webbing visible
Mite
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Bark of trunk 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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