Bagworms

You can remove bagworms by hand; earlier treatment with insecticides may be effective. Picking off and burning bags from fall until spring will reduce populations.  It is important to treat during mid-June. Small larvae are more susceptible to insecticides. Larger larvae and molting larvae are not easily killed. Insecticides with some residual are preferred. 

The presence of bags during winter is a good indication of which plants need to be treated the following year.  

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