Oleander scale , Aspidiotus nerii . This insect is rarely a problem. Apply ultrafine horticultural oil, which is among the compounds registered for control of this pest in Connecticut, as a dormant spray if needed. Consult the label for dosage rates and safety precautions. Twospotted spider mite, Tetranychus urticae .
Butterfly bush is prone to infestations of twospotted spider mites.
Avoid applying carbaryl, so predators have an opportunity to become established. Abamectin is an effective, restricted use product. Consult the labels for dosage rates and safety precautions.