Spotted Lanternfly inHagerstown, MDSPOTTED LANTERNFLY GUIDE
Hagerstown — Washington County seat and Western Maryland's largest city — confirmed SLF in 2022. Sitting at the I-70/I-81 interchange, one of the most significant freight hubs on the East Coast, Hagerstown is a critical SLF dispersal node connecting the mid-Atlantic to Appalachian corridors. The C&O Canal National Historical Park towpath provides prime Tree of Heaven habitat running along the Potomac, and proximity to Antietam Battlefield NPS sites adds ecological sensitivity to local SLF monitoring. MD statewide quarantine in effect as of March 2026.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
I-70/I-81 interchange (major freight hub and TOH margins)
Active zone
C&O Canal NHP corridor (heavy TOH along towpath)
Active zone
Antietam Creek watershed
Active zone
Hagerstown City Park
Active zone
CSX rail corridor through city
Active zone
Primary SLF food source
Tree of Heaven in Hagerstown, MD
The I-70/I-81 freight interchange is a primary SLF spread vector — heavy truck and freight traffic moving through Hagerstown daily transports egg masses across multiple state lines. The C&O Canal NHP towpath corridor has established Tree of Heaven populations running along the Potomac River toward DC. CSX rail lines through Washington County are heavily colonized by TOH, extending SLF habitat from the urban core into the surrounding agricultural and Appalachian landscape.
Identify Tree of Heaven →Active Quarantine Alert
Maryland is under a statewide spotted lanternfly quarantine as of March 2026. Moving plants, yard waste, or outdoor furniture out of Maryland may require inspection.
Local action resources
What To Do in Hagerstown, MD
Report a Sighting
Every sighting in Hagerstown, MD maps the invasion front. Report directly to Maryland 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 Maryland State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full Maryland guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Hagerstown, MD. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Hagerstown, MD.
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