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What to know about the Box Tree Moth and preventing invasive insects from spreading in Delaware

The Box Tree Moth is a highly destructive invasive insect and an unexpected find in Delaware.
United States Department of Agriculture
The Box Tree Moth is a highly destructive invasive insect and an unexpected find in Delaware.

The USDA’s Animal and Plant Health Inspection Service reported the discovery of the Box Tree Moth recently at a Kent County home.

The Box Tree Moth – typically found in New York, Michigan, and Massachusetts – is an unexpected find in Delaware. If left unchecked, it can quickly destroy and potentially kill plants.

Delaware Public Media’s Joe Irizarry caught up with Brian Kunkel – Cooperative Extension Specialist of Ornamentals Integrated Pest Management at the University of Delaware – to learn more about the Box Tree Moth and how to help prevent the invasive pest from spreading throughout the state.

UD's Brian Kunkel breaks down the Box Tree Moth and invasive pest prevention with DPM's Joe Irizarry

One invasive species has made its way to Delaware, and could do some damage to your plants.

The Box Tree Moth - usually found in New York, Michigan and Massachusetts - was recently discovered at a Kent County home, according to the USDA’s Animal and Plant Health Inspection Service.

Brian Kunkel is Cooperative Extension Specialist of Ornamentals Integrated Pest Management at UD. He says it probably came to Delaware through human travel. For example, it might have latched on to a crate.

"And so the Box Tree Moth hadn't been in Delaware, and the only way that I'm aware that would get here - because it's not that great a flier, it's strong but not hundreds of miles strong in its flight capability - would be to have human assistant movement into a new location," said Kunkel.

The Box Tree Moth is considered an invasive species - and if left to its own devices, can quickly destroy plants, potentially killing them - especially boxwoods.

Kunkel explains what you should do if you spot one.

"The best course of action I'm aware of is to inform the Department of Agriculture if you have a find, and if you don't know what the Department of Agriculture's number is or you can't get a hold of them then you can reach out to Cooperative Extension at any of the offices. And let them know and we would inform the Department of Ag," said Kunkel.

Kunkel adds the Department of Agriculture will then work to eliminate the population as much as possible.

Contact Delaware Cooperative Extension Master Gardeners at the Garden Helpline to report a suspected find and learn what pest management tools are available:

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Joe brings over 20 years of experience in news and radio to Delaware Public Media and the All Things Considered host position. He joined DPM in November 2019 as a reporter and fill-in ATC host after six years as a reporter and anchor at commercial radio stations in New Castle and Sussex Counties.
Kyle McKinnon is the Senior Producer for The Green with a passion for storytelling and connecting with people.