Delaware
Box Tree Moth Found at Private Residence in Kent County, Delaware – State of Delaware News
DOVER, Del. (July 15, 2024) — The United States Department of Agriculture’s Animal and Plant Health Inspection Service (USDA-APHIS) has confirmed a find of box tree moth (BTM; Cydalima perspectalis) at a private residence in Kent County, Delaware.
The box tree moth is a federally regulated pest that primarily feeds on boxwood species (Buxus spp.). If left unchecked, it causes significant damage and can potentially kill the plants. Boxwoods are a popular ornamental evergreen shrub common to many landscape environments in the United States.
“Box tree moth is an unexpected find in Delaware due to the distance from the only known U.S. detections in New York, Michigan, Ohio, and Massachusetts, with the original introduction in New York in 2021. We are working closely with USDA and University of Delaware Extension to map out the infestations. Still, at this time, only one property in Kent County has a confirmed population and control measures have been implemented,” said Jessica Munski, Delaware Department of Agriculture’s Plant Industries Administrator. “This invasive pest is a good flyer, spreading naturally three to six miles a year, but it is suspected that they can fly up to 20 miles. The aggressive, destructive nature of the caterpillar life stage makes it essential to take quick action as soon as damage is detected because defoliation can occur within ten days.”
The caterpillars, which can grow to 1.5 inches, will start out as lime-green, with black stripes, white spots, hair, and a shiny black head. They then create a large amount of webbing on the plant. The caterpillars are ravenous feeders and, in heavy infestations, can completely defoliate host plants. After the leaves are gone, they feed on the bark, eventually killing the plant.
USDA photo by Hannah Nadel
The adult box tree moth generally has white wings with a thick brown border. It can be hard to find as it is most active at night. The BTM can sometimes be confused with the melonworm moth.
What You Can Do
Delawareans can help prevent this invasive pest from spreading throughout the state’s landscape, by monitoring, reporting, and controlling infestations.
- If you have boxwoods in your landscape, monitor your shrubs for brown or skeletonized leaves, defoliation, and webbing with caterpillars.
- Contact Delaware Cooperative Extension Master Gardeners at the Garden Helpline to report a suspected find and learn what pest management tools are available:
- New Castle County: 302-831-8862
- Kent County: 302-730-4000
- Sussex County: 302-831-3389
- Allow Delaware or Federal agricultural officials to inspect your boxwood plants and place detection traps.
- Remove infested boxwood plant branches. For heavy infestations, cut the boxwood from its base. Your plant should grow back from its roots. All boxwood debris should be double-bagged in plastic and placed in the trash. Homeowners should follow the Delaware Cooperative Extension’s pesticide recommendations.
- Nursery owners should monitor their boxwoods and implement safeguards to limit pest risk. All nursery businesses should report box tree moth detections to the Delaware Department of Agriculture at DDA_PlantPests@delaware.gov.
Learn more about the box tree moth at https://www.aphis.usda.gov/plant-pests-diseases/box-tree-moth.
###
Related Topics: box tree moth, boxwood, caterpillar, invasive, Kent County, pest, USDA
Keep up to date by receiving a daily digest email, around noon, of current news release posts from state agencies on news.delaware.gov.
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DOVER, Del. (July 15, 2024) — The United States Department of Agriculture’s Animal and Plant Health Inspection Service (USDA-APHIS) has confirmed a find of box tree moth (BTM; Cydalima perspectalis) at a private residence in Kent County, Delaware.
The box tree moth is a federally regulated pest that primarily feeds on boxwood species (Buxus spp.). If left unchecked, it causes significant damage and can potentially kill the plants. Boxwoods are a popular ornamental evergreen shrub common to many landscape environments in the United States.
“Box tree moth is an unexpected find in Delaware due to the distance from the only known U.S. detections in New York, Michigan, Ohio, and Massachusetts, with the original introduction in New York in 2021. We are working closely with USDA and University of Delaware Extension to map out the infestations. Still, at this time, only one property in Kent County has a confirmed population and control measures have been implemented,” said Jessica Munski, Delaware Department of Agriculture’s Plant Industries Administrator. “This invasive pest is a good flyer, spreading naturally three to six miles a year, but it is suspected that they can fly up to 20 miles. The aggressive, destructive nature of the caterpillar life stage makes it essential to take quick action as soon as damage is detected because defoliation can occur within ten days.”
The caterpillars, which can grow to 1.5 inches, will start out as lime-green, with black stripes, white spots, hair, and a shiny black head. They then create a large amount of webbing on the plant. The caterpillars are ravenous feeders and, in heavy infestations, can completely defoliate host plants. After the leaves are gone, they feed on the bark, eventually killing the plant.
USDA photo by Hannah Nadel
The adult box tree moth generally has white wings with a thick brown border. It can be hard to find as it is most active at night. The BTM can sometimes be confused with the melonworm moth.
What You Can Do
Delawareans can help prevent this invasive pest from spreading throughout the state’s landscape, by monitoring, reporting, and controlling infestations.
- If you have boxwoods in your landscape, monitor your shrubs for brown or skeletonized leaves, defoliation, and webbing with caterpillars.
- Contact Delaware Cooperative Extension Master Gardeners at the Garden Helpline to report a suspected find and learn what pest management tools are available:
- New Castle County: 302-831-8862
- Kent County: 302-730-4000
- Sussex County: 302-831-3389
- Allow Delaware or Federal agricultural officials to inspect your boxwood plants and place detection traps.
- Remove infested boxwood plant branches. For heavy infestations, cut the boxwood from its base. Your plant should grow back from its roots. All boxwood debris should be double-bagged in plastic and placed in the trash. Homeowners should follow the Delaware Cooperative Extension’s pesticide recommendations.
- Nursery owners should monitor their boxwoods and implement safeguards to limit pest risk. All nursery businesses should report box tree moth detections to the Delaware Department of Agriculture at DDA_PlantPests@delaware.gov.
Learn more about the box tree moth at https://www.aphis.usda.gov/plant-pests-diseases/box-tree-moth.
###
Related Topics: box tree moth, boxwood, caterpillar, invasive, Kent County, pest, USDA
Keep up to date by receiving a daily digest email, around noon, of current news release posts from state agencies on news.delaware.gov.
Here you can subscribe to future news updates.
From Delco to Chesco and Montco to Bucks, what about life in Philly’s suburbs do you want WHYY News to cover? Let us know!
Chester Water Authority on Monday lifted the boil water advisory for Bethel, Lower Chichester, Upper Chichester, Marcus Hook and Twin Hooks.
“We want to extend our sincere gratitude to our ratepayers and employees for their patience, resilience, and support during the recent emergency,” said Darryl Jenkins, executive manager of Chester Water Authority, in a release.
On Thursday, a water main break at a PennDOT construction zone along Route 322 near Cherry Tree Road in Upper Chichester Township caused massive disruptions to the system. Affected customers experienced low to no water pressure.
CWA issued a boil water advisory for parts of southern Delaware County. Customers outside the range did not need to take action, but even in nearby areas, some residents experienced low water pressure. The authority set up water-filling stations at the Upper Chichester Township Building, Marcus Hook Borough Office and Ogden Fire Company.
Monday, March 30, 2026 11:29AM
NEW CASTLE, Del. (WPVI) — An investigation is underway in Delaware after police discovered a man’s decomposing body in New Castle County.
The remains were found near Route 40 and Appleby Road in New Castle on Sunday afternoon.
The Action Cam was at the scene as Delaware State Police converged on the area after the discovery.
Authorities say the decomposing body is that of an unidentified man.
An autopsy will be performed to determine the cause of death.
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From Philly and the Pa. suburbs to South Jersey and Delaware, what would you like WHYY News to cover? Let us know!
The Delaware River Bridge will be replaced following a $600 million grant from the U.S. Department of Transportation, revitalizing a main connector between Bucks County, Pennsylvania, and Burlington County, New Jersey.
According to a joint release from U.S. Pennsylvania Senators John Fetterman, D, and Dave McCormick, R, the funds will “advance” the PA Turnpike/I-95 Interchange Program. The Pennsylvania Turnpike Commission said the program is designed to reduce congestion on County roadways and improve traffic flow in the Philadelphia region.
Fetterman and McCormick called the $600 million going towards the project “one of the most consequential infrastructure commitments in Pennsylvania’s history.”
“The Delaware River Bridge is not just a Pennsylvania asset; it is a backbone of our national freight and passenger transportation network,” the statement read. “This funding will make it safer and more resilient for the commuters, families, and businesses that depend on it every single day.”
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