Delaware Department of Natural Resources and Environmental Control. Division of Fish and Wildlife.

The Northern Snakehead (Channa argus), a fish native to China and Russia, has become a problem invasive species in several states, including Delaware. Anyone who catches a snakehead in Delaware is encouraged to kill it and notify the Division of Fish and Wildlife.

Delaware Department of Agriculture.

A destructive, invasive beetle that kills ash trees, the emerald ash borer (EAB), has been confirmed in Delaware, making it the 28th state to have found the insect, the Delaware Department of Agriculture announced today. Delaware will be added to a federal quarantine already in 27 other states restricting the interstate shipment of all ash wood and wood products - ash nursery stock, green lumber, waste, compost and chips - as well as hardwood firewood of all species.

Delaware Invasive Species Council.

Be on the lookout for these up-and-coming invaders! They might not be in Delaware yet, but our best defense is early detection and rapid response!

Delaware Department of Agriculture.

The Delaware Department of Agriculture (DDA) announced today that they expanded the spotted lanternfly quarantine to include all portions of New Castle County north of the Chesapeake and Delaware Canal. This is due to recent detections of established populations outside of the initial quarantine zone enacted in February 2019 that included eleven zip codes. "This expansion is necessary in our attempt to eradicate, control, and prevent the spread of spotted lanternfly in Delaware and to surrounding states," said Secretary of Agriculture Michael T. Scuse. The spotted lanternfly is a destructive invasive plant hopper that attacks many hosts including trees, shrubs, orchards, grapes, and hops. For more detailed information regarding the quarantine, permitting, treatment, or to report a sighting of spotted lanternfly, visit the Delaware Department of Agriculture’s dedicated spotted lanternfly webpage or call the dedicated spotted lanternfly hotline at (302) 698-4632.

Delaware Invasive Species Council.

Delaware Department of Agriculture.

Delaware Department of Agriculture.

On June 1, a new regulation was published in the Delaware Register of Regulations (Volume 26, Issue 12) listing potbellied pigs and feral swine of any kind as invasive. The Delaware Department of Agriculture (DDA) is providing a 30-day grace period for potbellied pig owners to apply for an Invasive Animal Permit. Owners have until August 12 to submit an application and comply with 3 DE Admin. Code 906 Possession, Sale, or Exhibition of Non-Native and Invasive Animal Species.

University of Delaware. Delaware Sea Grant College Program.

See also: Delaware's Invasive Crabs for more story maps

University of Delaware. Delaware Sea Grant College Program.

See also: Delaware's Invasive Crabs for more story maps

University of Delaware. Delaware Sea Grant College Program.

See also: Delaware's Invasive Crabs for more story maps

Delaware Department of Agriculture.

Emerald ash borer (EAB), a destructive insect from Asia that attacks and kills ash trees, has been confirmed at two new sites in Delaware: one near Middletown, New Castle County, and another near Seaford, Sussex County. Originally found in northern Delaware in 2016, the new detections create added urgency for homeowners and municipalities to determine if they have ash trees on their property and decide on possible management options. Current guidelines recommend the removal or treatment of ash trees if located within 15 miles of a known infestation. Because Delaware is geographically small and EAB can go undetected for years, residents are urged to educate themselves now and take action.

Delaware Department of Agriculture. Forest Service.

Delaware Department of Natural Resources and Environmental Control. Division of Fish and Wildlife.

Delaware Department of Natural Resources and Environmental Control. Division of Fish and Wildlife.

University of Delaware. Cooperative Extension.

See also: Weed Management Guides for more species

Delaware Department of Natural Resources and Environmental Control. Delaware Division of Fish and Wildlife.

University of Delaware. Cooperative Extension.

See also: Weed Management Guides for more resources

University of Delaware. Cooperative Extension.

Delaware Department of Agriculture (DDA).

The Spotted Lanternfly is detrimental to Delaware’s agricultural industries, the environment, and residential areas, and has an impact on interstate commerce.  In 2017, Delaware was the second state, other than Pennsylvania, to have found the insect. In Delaware, it was first detected in New Castle County, with recent findings in Kent County (October 2020).

Residents who live near Dover Air Force Base or in Sussex County are encouraged to report sightings of spotted lanternfly. Citizen reports help DDA inspectors determine how these insects move and which transportation pathways they utilize. These reports also allow DDA to notify agricultural operations with plants vulnerable to this insect.

University of Delaware Cooperative Extension.

Plants for a Livable Delaware is a campaign to identify and promote superior plants that thrive without becoming invasive. Visit the University of Delaware's Extension Program for more information on sustainable landscaping.