Spotted Lanternfly inPrince William County, VASPOTTED LANTERNFLY GUIDE
Prince William County is one of the fastest-growing counties in the United States and a critical node in Northern Virginia's SLF spread network — confirmed in 2022 with heavy infestation now established across its rapidly expanding suburban and exurban landscape. The I-95/I-66 interchange at Dumfries is one of the most significant freight and commuter chokepoints on the Eastern Seaboard, driving constant vehicle-mediated SLF reinforcement from the established Fairfax and Arlington infestation zones to the north. VRE Manassas and Fredericksburg rail lines carry thousands of commuters daily along corridors lined with Tree of Heaven, creating linear SLF dispersal highways through the heart of the county. Manassas National Battlefield Park — site of two major Civil War battles — is a priority monitoring zone as SLF spreads through historic open meadow and mature woodland habitat.
Highest activity zones
SLF Hotspots in Prince William County, VA
I-95/I-66 interchange (major freight and commuter hub)
Active zone
Manassas National Battlefield Park
Active zone
Quantico Marine Corps Base buffer zone
Active zone
VRE Manassas and Fredericksburg line corridors
Active zone
Occoquan River watershed
Active zone
Primary SLF food source
Tree of Heaven in Prince William County, VA
Tree of Heaven is well established along Prince William County's I-95 and I-66 road margins, VRE rail corridors, and Occoquan River watershed, creating continuous SLF habitat pathways from the established Northern Virginia infestation zone southward into the county's interior. The Manassas National Battlefield Park road margins and Quantico Marine Corps Base fence-line buffers have Ailanthus populations that are difficult to manage on restricted-access or federally managed lands. The Occoquan River corridor and its tributaries provide natural SLF dispersal routes through the county's remaining rural and forested landscapes as suburban development continues to expand.
Identify Tree of Heaven →Local action resources
What To Do in Prince William County, VA
Report a Sighting
Every sighting in Prince William County, VA maps the invasion front. Report directly to Virginia Department of Agriculture and Consumer Services.
Report Now →Squish on Sight
See a spotted lanternfly? Kill it immediately — it is legal and encouraged in all states. Learn the best kill methods.
Full Fight Guide →Map ToH in Your Block
Tree of Heaven removal cuts off SLF food supply. Add ToH sightings to the community map to guide removal efforts.
View Sighting Map →Statewide resources
Full VA State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full VA guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Prince William County, VA. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Prince William County, VA.
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