Spotted Lanternfly inMiddlesex County, NJSPOTTED LANTERNFLY GUIDE
Middlesex County has been heavily infested since 2019, with SLF populations established throughout the county's urban, suburban, and industrial landscapes. Home to Rutgers University — the primary New Jersey SLF research center — New Brunswick has been at the forefront of tracking and studying the invasion. The Northeast Corridor rail line, the busiest passenger rail corridor in the United States, cuts through Middlesex County and has served as a major SLF dispersal highway. The Raritan River corridor and Edison/Woodbridge industrial warehouse district face ongoing infestation pressure, and the NJ Turnpike/Garden State Parkway interchange node means freight-mediated spread remains a constant concern.
Highest activity zones
SLF Hotspots in Middlesex County, NJ
Rutgers New Brunswick campus (active SLF research site)
Active zone
Raritan River greenway
Active zone
Edison/Woodbridge industrial corridor
Active zone
NJ Turnpike/GSP junction area
Active zone
Johnson Park
Active zone
Primary SLF food source
Tree of Heaven in Middlesex County, NJ
Tree of Heaven is well established along the Raritan River corridor and road margins throughout Middlesex County, particularly in New Brunswick, Edison, and Woodbridge. The Northeast Corridor rail embankments have dense Ailanthus populations that extend SLF habitat through the heart of the county. Johnson Park along the Raritan River has significant ToH coverage, and the industrial warehouse corridors of Edison are surrounded by Ailanthus-colonized margins that fuel persistent SLF populations.
Identify Tree of Heaven →Local action resources
What To Do in Middlesex County, NJ
Report a Sighting
Every sighting in Middlesex County, NJ maps the invasion front. Report directly to NJ Department of Agriculture.
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 NJ State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full NJ guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Middlesex County, NJ. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Middlesex County, NJ.
One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in Middlesex County, NJ.