Spotted Lanternfly inLancaster County, PASPOTTED LANTERNFLY GUIDE
Lancaster County — Pennsylvania Dutch farm country and the most productive farmland county in the Northeast — has been grappling with SLF since 2018. The county's dense agricultural landscape, including significant hop and grape production, faces serious economic pressure from SLF. Lancaster city's Tree of Heaven lining rail corridors has created major urban spread zones, and the Amish farmland community faces ongoing challenges as SLF populations continue to expand into the region's most valuable agricultural areas.
Highest activity zones
SLF Hotspots in Lancaster County, PA
Lancaster city rail corridors
Active zone
Amish farmland perimeter roads
Active zone
Susquehanna River corridor
Active zone
Route 30 corridor
Active zone
Conestoga River greenway
Active zone
Primary SLF food source
Tree of Heaven in Lancaster County, PA
Tree of Heaven is pervasive along Lancaster city's historic rail corridors and road margins throughout the county. The Conestoga River and Susquehanna River corridors have dense Ailanthus populations that fuel spread into surrounding farmland. Rail lines radiating from Lancaster city continue to serve as primary SLF dispersal highways across this agricultural landscape.
Identify Tree of Heaven →Local action resources
What To Do in Lancaster County, PA
Report a Sighting
Every sighting in Lancaster County, 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 County, PA. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Lancaster County, PA.
One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in Lancaster County, PA.