Box Tree Moth Invasion: Ohio Counties Under Quarantine (2026)

An insidious invader is threatening Ohio's greenery, and the battle to contain it is intensifying! The box tree moth, an invasive insect, has prompted a growing quarantine across the state, now encompassing several Miami Valley counties.

But wait, there's more! The quarantine, which initially included Miami, Montgomery, Greene, Butler, Clermont, Hamilton, and Warren counties, has expanded to include Clark, Preble, Cuyahoga, Ashtabula, Lorain, Lake, and Lucas counties. This expansion aims to halt the moth's destructive path, which can wreak havoc on boxwood shrubs and the horticulture industry.

The Ohio Department of Agriculture (ODA) is taking action, urging landscapers and residents to respect the quarantine boundaries and refrain from transporting potentially infested plants. This pest was first detected in June 2023 near Hamilton and Clermont counties, and its presence has since been confirmed in new locations.

Here's how you can help: learn to identify the moth's life stages and the telltale signs of infestation on boxwood shrubs. Keep an eye out for green and yellow caterpillars with distinctive stripes and spots, and adult moths with white, iridescent wings and brown borders. Report any sightings or signs of damage, such as chewed leaves, yellowing, white webbing, or green-black excrement.

And this is where it gets tricky: the quarantine regulations restrict the movement of boxwood shrubs, which could impact local businesses and gardeners. Is this a necessary precaution or an overreaction? The debate is open, and your opinion matters. Share your thoughts in the comments below: are these measures justified to protect Ohio's green spaces, or is there a better approach to managing invasive species?

Box Tree Moth Invasion: Ohio Counties Under Quarantine (2026)
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