Rhododendron
Symptom Cause  
Leaves skeletonized
Asiatic Garden Beetle
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Leaves and branches encrusted with small bumps; stunted plant growth
Bark Scale
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Many holes in trunk and branches; small limbs girdled sawdust at holes
Borers
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Major foliage damage
Deer
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Foliage looks burned
Dog Urine
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Leaves yellowed; veins green
Iron Chlorosis
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Leaves or needles mottled yellow and green.; hard, shiny droplets on leaves
Lacebugs
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Flowers collapse
Petal Blight
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Leaves coated with white powder
Powdery Mildew
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Failure to thrive
Soil to Alkaline
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Yellowing of foliage, gradual defoliation, plants may become stunted
Verticillium Wilt
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Holes chewed on outside of leaves
Weevils
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