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Boxtree moth #877771

Asked July 18, 2024, 11:42 AM EDT

Hi, I think we got boxtree moth infestation on my outdoor shrubs. Not sure what to do about it. Any ideas will be appreciated. Thanks

Oakland County Michigan

Expert Response

As you are probably aware, there are a lot of Box Tree Moth outbreaks in Oakland County. First determine what shrubs the pest is damaging. If the shrubs are not boxwood, then it is likely another pest, as boxwood moth feeds pretty exclusively on boxwood.

If you are looking inside the plant for webbing, it can be hard to tell if the webbing is from these insects or others unless you see the pests in some stage of life.  If it is just webbing, keep an eye on the plants and check for the presence of box tree moth caterpillar larvae (larva looks like a very small caterpillar, greenish yellow in color with a shiny black head), pupae, or moths.

Here is a link to an article on Box Tree Moth for Michigan homeowners:

What the box tree moth quarantine means for Michigan homeowners - Floriculture & Greenhouse Crop Production (msu.edu)

If you want to treat for them, please note that as with most pests, timing and the life cycle of the insect are critical when treating them. Be sure to follow all specific application information on any product you may be using.

Additionally, here is a link to MSU's Box Tree Moth resource page for other articles and more info:

Box Tree Moth - Box Tree Moth (msu.edu)


An Ask Extension Expert Replied July 19, 2024, 12:13 PM EDT

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