Spotted Lanternfly inTroy, NYSPOTTED LANTERNFLY GUIDE
Rensselaer County confirmed SLF in 2022, placing Troy — the Collar City — at the leading edge of SLF's spread into the Capital District. The Hudson River waterfront is prime Tree of Heaven habitat running through Troy's urban core, and the I-787 corridor connects Troy's populations to Albany's established infestation zone just across the river. Rensselaer Polytechnic Institute's campus is under active monitoring, and the historic ironworks district's brownfield legacy provides classic TOH colonization ground. The Collar City Bridge freight crossing links Troy's SLF populations directly to Rensselaer County's suburban and rural landscape.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
Hudson River waterfront (TOH along banks)
Active zone
I-787 corridor highway margins
Active zone
Rensselaer Polytechnic Institute campus
Active zone
Historic ironworks brownfield district
Active zone
Collar City Bridge freight crossing area
Active zone
Primary SLF food source
Tree of Heaven in Troy, NY
Troy's Hudson River waterfront and the I-787 corridor have established Tree of Heaven populations connecting the city to Albany's confirmed SLF zone directly across the river — one of the most active SLF corridors in the Capital District. The historic ironworks brownfield district's disturbed industrial soils are prime TOH colonization ground, supporting dense SLF populations through Troy's urban core. RPI campus and the Collar City Bridge freight crossing are priority monitoring sites as populations expand through Rensselaer County's Hudson Valley gateway.
Identify Tree of Heaven →Local action resources
What To Do in Troy, NY
Report a Sighting
Every sighting in Troy, NY maps the invasion front. Report directly to New York State DEC.
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 New York State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full New York guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Troy, NY. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Troy, NY.
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