Spotted Lanternfly inBerks County, PASPOTTED LANTERNFLY GUIDE
Berks County is ground zero for the spotted lanternfly invasion in North America. In 2014, the first confirmed U.S. detection was made in Boyertown — and since then, Berks County has endured over a decade of SLF establishment. Populations are now deeply entrenched throughout the county, from the Reading urban area to the agricultural landscapes of the Oley Valley. Vineyards and orchards in Berks County have faced some of the longest-running and most severe SLF pressure of any county in the nation.
Highest activity zones
SLF Hotspots in Berks County, PA
Boyertown area (original detection site)
Active zone
Schuylkill River Trail corridor
Active zone
French Creek State Park
Active zone
Oley Valley farmland
Active zone
Reading city perimeter
Active zone
Primary SLF food source
Tree of Heaven in Berks County, PA
Tree of Heaven is extensively established throughout Berks County, particularly along the Schuylkill River corridor and road margins radiating from Reading. French Creek State Park has significant Ailanthus populations, and the rail and road corridors that originally spread SLF from Boyertown remain heavily colonized. Oley Valley orchards and vineyards sit in a landscape saturated with ToH hosts.
Identify Tree of Heaven →Local action resources
What To Do in Berks County, PA
Report a Sighting
Every sighting in Berks 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 Berks County, PA. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Berks County, PA.
One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in Berks County, PA.