Mock Orange
Symptom Cause  
Leaves curl/discolor; honeydew on undersides of leaves, sooty mold forms
Aphids
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Some leaves turn pale green to yellow; new leaves yellow; plant stunted
Iron Deficiency
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Leaves coated with white powder
Powdery Mildew
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Leaf edges brown, black, die;
Salt Damage
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Black powdery sooty mold fungus forms on honeydew;
Sooty Mold
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