Spotted Lanternfly inRockland County, NYSPOTTED LANTERNFLY GUIDE
Rockland County sits just north of New York City on the New Jersey border — part of the NYC metro suburban ring, confirmed for SLF in 2021 as populations spread north from New Jersey and west from Westchester County. The Tappan Zee/Mario Cuomo Bridge corridor is a critical SLF spread vector, moving populations between Westchester and Rockland as commuter and freight traffic crosses the Hudson. Palisades Interstate Park has significant Tree of Heaven along the Hudson River escarpment, creating ideal SLF habitat adjacent to major retail corridors in Spring Valley and New City. Major loading docks and warehouse districts in the county serve as ongoing SLF reinforcement nodes via freight traffic from established infestations to the south and east.
Highest activity zones
SLF Hotspots in Rockland County, NY
Palisades Interstate Park (Hudson River TOH corridor)
Active zone
Harriman State Park edge
Active zone
Bear Mountain area access corridor
Active zone
Spring Valley commercial district
Active zone
Congers Lake area
Active zone
Primary SLF food source
Tree of Heaven in Rockland County, NY
Tree of Heaven is well established along the Hudson River escarpment within Palisades Interstate Park in Rockland County, creating a linear SLF habitat corridor along the park's eastern boundary. The Bear Mountain area access roads and Harriman State Park edge have Ailanthus populations at the suburban-forest interface. Spring Valley commercial district parking lot margins and Congers Lake road margins provide additional ToH habitat that supports SLF populations through the fall season in this densely suburban county.
Identify Tree of Heaven →Local action resources
What To Do in Rockland County, NY
Report a Sighting
Every sighting in Rockland County, NY maps the invasion front. Report directly to NY Department of Agriculture & Markets.
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 NY State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full NY guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Rockland County, NY. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Rockland County, NY.
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