Sycamore, Plane Tree
Symptom Cause  
Irregular tan or brown spots on leaves at veins; expand until leaves die; sometimes sunken spots on leaves
Anthracnose (on plants)
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Many holes in branches; limbs girdled sawdust at holes
Borers
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Fewer; smaller leaves; blue/black stains under the bark
Canker Stain (fungus)
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Young portions of foliage disappear, or young tips disappear; shredded bark on trunk
Deer
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Leaves turn pale; mottled; drop early
Lacebugs
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Bumps on leaves; branches; stunted growth
Scale Insects
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