Spotted Lanternfly inNew Haven, CTSPOTTED LANTERNFLY GUIDE
New Haven County was among the first Connecticut counties confirmed for SLF in 2023. The I-95 corridor brings SLF pressure directly from New York, and New Haven Harbor's industrial waterfront has established Tree of Heaven populations. Yale University's extensive campus tree plantings are under active monitoring. Long Island Sound vineyard operators are on high alert as SLF moves through the region.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
East Rock Park
Active zone
West River Memorial Park
Active zone
Yale campus greenspaces
Active zone
I-95/I-91 interchange area
Active zone
New Haven Harbor waterfront
Active zone
Primary SLF food source
Tree of Heaven in New Haven, CT
Tree of Heaven is established along New Haven Harbor's industrial waterfront, I-95 and I-91 highway corridors, and disturbed urban lots throughout the city. Yale University campus greenspaces and East Rock Park provide additional TOH habitat supporting SLF population growth as the pest spreads east through Connecticut.
Identify Tree of Heaven →Local action resources
What To Do in New Haven, CT
Report a Sighting
Every sighting in New Haven, CT maps the invasion front. Report directly to CT Agricultural Experiment Station.
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 Connecticut State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full Connecticut guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in New Haven, CT. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in New Haven, CT.
One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in New Haven, CT.