Box Tree Moth Found in Genesee County
USDA traps confirmed a new box tree moth population in Genesee County, which would become Michigan's 14th quarantined county.
Updated on Nov. 3, 2026 in Botany
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The USDA has confirmed a box tree moth population in Genesee County, Michigan, near the edge of the state's existing quarantine zone. Genesee County would become the 14th county in the quarantine, which covers whole counties rather than individual neighborhoods.
Why it matters
The box tree moth's caterpillars chew boxwood leaves, and heavy infestations can strip shrubs bare and kill them. Quarantine rules restrict moving boxwood plants or clippings out of the zone to slow the spread to other areas of the state.
The quarantine zone now spans 13 counties, and Genesee County would bring the total to 14. Details on the population size and detection date were not provided in the source.
The players
USDA
The U.S. Department of Agriculture is the federal agency that operates the traps that detected the box tree moth in Genesee County.
The details
USDA traps detected the new population near the edge of Michigan's existing quarantine zone. Residents outside the quarantine area are asked to notify officials before spraying or disposing of infested plants, and can report sightings through Michigan's Eyes in the Field online reporting system.
Timeline
Confirmation of the box tree moth in Genesee County was reported on November 3, 2026.
Seasonal Patterns
The Genesee County detection extends Michigan's box tree moth quarantine zone, which already covers 13 counties in the Lower Peninsula. Each new detection near the zone's edge pushes the quarantine boundary outward to contain the pest.
Residents in Genesee County and neighboring areas should avoid moving boxwood plants or clippings outside the quarantine zone. Anyone who spots signs of the pest is asked to report them through Michigan's Eyes in the Field system.
The takeaway
Boxwood owners across Michigan should check plants for caterpillar damage and report suspected sightings promptly. Early reporting helps officials keep infestations from spreading beyond the current quarantine boundary.
Further reading
For related plant pest coverage, see Botany on Wisevoter.
Source note: This article includes information reported by Cars 108.
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