Pine, White
Symptom Cause  
New needles flecked yellow; tips redden, die; needles drop
Air Pollution
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Needles wrinkled or curled; discolored, stunted, tend to fall off
Aphids
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Shoots die back; bark cankers appear pitch
Canker (fungus)
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One or more masses sticky cream, yellow, pinkish pitch; larva under masses
Caterpillar Pitch Moth
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Major damage; foliage eaten; bark is shredded in flat strips
Deer
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New growth on tree top yellows, then browns, whole tree browns
Engraver Beetle
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New shoot fade, redden; droop, lose needles
European Pine Shoot Borer
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Needles discolored; drop prematurely
Needle Cast (fungus)
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Twigs dried out; galls present
Pine Bark Aphids
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Crown needles turn yellow/reddish brown; holes in trunk; bark tunnels
Pine Bark Beetle
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Chlorosis; defoliation; stunting
Pine Decline
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Small white bumps on needles
Pine Needle Scale
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Sticky bud tips; needles turn yellow
Pine Shoot Beetles
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Frothy mass of bubbles, base of needles
Pine Spittlebugs
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Brown nests of silk, brown needles; branches stripped
Pine Webworms
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Bark of trunk and roots gnawed
Rodents
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Tree yellows, grows poorly; or branches die
Root Nematodes
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Needles wilt; cankers on trunk; blister
Rust (on plants)
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Needles chewed, branches defoliated
Sawflies
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Needles, branches encrusted with bumps; growth stunted
Scale
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Black powdery sooty mold fungus forms on honeydew; branches may die
Sooty Mold
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Needles flecked; red-brown; drop
Spider Mites
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Needles stippled yellow, dirty; silken webbing
Spruce Spider Mite
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Top shoot stops growing; turns yellow; tip droops; white resin on bark; small holes in dead branch
White Pine Weevils
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