Spotted Lanternfly inSuffolk County, NYSPOTTED LANTERNFLY GUIDE
Suffolk County — the eastern half of Long Island — confirmed SLF in 2022, putting the North Fork wine country and Long Island Sound vineyards on high alert. The North Fork Wine Trail is one of the most economically significant SLF-threatened agricultural zones in New York, with dozens of vineyards at risk from SLF feeding damage. The LIRR rail corridor has emerged as a key spread vector, moving SLF populations east from Nassau County toward the Hamptons and the East End. Stony Brook University campus and Caumsett State Park are significant monitoring sites as populations continue to establish across Long Island's eastern regions.
Highest activity zones
SLF Hotspots in Suffolk County, NY
North Fork Wine Trail corridor
Active zone
Stony Brook University campus
Active zone
LIRR Montauk Branch
Active zone
Caumsett State Park
Active zone
Primary SLF food source
Tree of Heaven in Suffolk County, NY
Tree of Heaven is present along LIRR rail corridors and road margins throughout central Suffolk County. The Montauk Branch rail corridor provides a Tree of Heaven corridor connecting established western populations to the North Fork wine country. Ongoing monitoring along road margins near the North Fork Wine Trail is critical to protecting Long Island's vineyard economy from expanding SLF populations.
Identify Tree of Heaven →Local action resources
What To Do in Suffolk County, NY
Report a Sighting
Every sighting in Suffolk 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 Suffolk County, NY. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Suffolk County, NY.
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