Cotoneaster
Symptom Cause  
Webbing holds leaves and twigs together
Cotoneaster Webworm
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Lower foliage looks burned
Dog Urine
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Spots on leaves; twig dieback and blackening
Fire Blight (bacterial)
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Upper surface leaves mottled yellow, green; hard, shiny, black droplets leaves
Hawthone Lacebug
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Bark of stems and roots gnawed
Mice
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Leaves stippled/yellow/bronze/dry out/Drop. Webbing visible; leaf galls
Pear Leaf Blister Mites
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Leaves coated with white powder
Powdery Mildew
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Bark of stems and roots gnawed
Rabbits
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Bark of stems and roots gnawed
Voles
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