CHARLESTON, WV (LOOTPRESS) – The West Virginia Department of Agriculture (WVDA) has confirmed the presence of the Box Tree Moth (Cydalima perspectalis) in Berkeley County, marking the first known detection of the invasive species in the state.
The Box Tree Moth, native to East Asia, targets boxwood plants (Buxus species), a widely used ornamental shrub in residential and commercial landscaping across West Virginia. Since it was first discovered in North America near Lake Ontario in 2021, the pest has spread rapidly and is now confirmed in several states, including Delaware, Massachusetts, Michigan, Ohio, Pennsylvania, and as of 2025, West Virginia.
“This pest poses a serious threat to boxwood plants, which are foundational elements in many residential and commercial landscapes,” said Agriculture Commissioner Kent Leonhardt. “Early detection is critical, and we’re asking homeowners and landscapers to keep an eye out and report any suspicious damage.”
The caterpillars feed on the leaves and bark of boxwoods, potentially causing severe defoliation and even plant death. The larvae are small, lime-green, and difficult to spot in early stages, often blending in with the plant’s foliage. Infestations may not be obvious until significant damage has occurred.
Signs of infestation include:
- Chewed or missing leaves
- Presence of small green caterpillars
- Webbing on or inside the plant
- Bark stripping in advanced stages
The Box Tree Moth can produce multiple generations per year, allowing infestations to escalate quickly if not addressed.
Early intervention is key. Treatment options include Bacillus thuringiensis kurstaki (Btk), a naturally derived pesticide safe for boxwoods and widely available at garden centers. Other insecticides labeled for BTM control may also be effective. The WVDA urges residents to always follow pesticide label instructions carefully.
Anyone who suspects their boxwood plants may be affected is encouraged to contact the WVDA for confirmation and treatment guidance.
Contact the WVDA:
📞 (304) 558-2212
📧 bugbusters@wvda.us
For more information about the Box Tree Moth and management strategies, visit the WVDA website.