Spotted Lanternfly inLancaster, PASPOTTED LANTERNFLY GUIDE
Lancaster city confirmed SLF in 2018 and is now surrounded by the most productive farmland in the Northeast — putting Lancaster County's Amish agricultural district at significant economic risk. The railroad corridor running through the city has heavy Tree of Heaven colonization, a classic SLF spread vector. Downtown Lancaster has an active urban forestry program working to combat SLF in city street trees. The Conestoga River greenway provides additional TOH habitat through the urban core.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
Long's Park
Active zone
Buchanan Park
Active zone
Conestoga River Greenway
Active zone
Penn Square downtown tree corridor
Active zone
Amtrak rail corridor
Active zone
Primary SLF food source
Tree of Heaven in Lancaster, PA
Lancaster's Amtrak rail corridor and freight rail lines are heavily colonized by Tree of Heaven — a primary SLF spread vector through the city and out into surrounding farm country. The Conestoga River Greenway has documented TOH populations along its banks. Downtown urban forestry efforts are targeting TOH removal, but the sheer density of surrounding agricultural land makes Lancaster County one of the highest-risk zones in Pennsylvania.
Identify Tree of Heaven →Local action resources
What To Do in Lancaster, PA
Report a Sighting
Every sighting in Lancaster, PA maps the invasion front. Report directly to PA 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 PA State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full PA guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Lancaster, PA. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Lancaster, PA.
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