Spotted Lanternfly inCecil County, MDSPOTTED LANTERNFLY GUIDE
Cecil County occupies Maryland's northeastern corner — the gateway between the Mid-Atlantic and the Northeast — confirmed for SLF in 2022 as populations moved south from Delaware and Pennsylvania's heavily infested Lancaster and York counties. The I-95 Delaware border crossing at Elkton is one of the highest-volume freight entry points into Maryland from the north, making Cecil County a critical SLF reinforcement node via constant truck and vehicle traffic from established infestation zones. The Chesapeake and Delaware Canal — a major commercial shipping waterway connecting the Chesapeake Bay to the Delaware River — adds a unique maritime freight spread dimension. The Elk River watershed and Susquehanna State Park provide natural SLF spread corridors through the county's diverse waterway network. Cecil County is under Maryland's statewide quarantine in effect since March 2026.
Maryland is under a statewide spotted lanternfly quarantine as of March 2026. Moving regulated articles out of Maryland requires inspection.
Highest activity zones
SLF Hotspots in Cecil County, MD
I-95 Delaware border crossing at Elkton
Active zone
Chesapeake City and C&D Canal
Active zone
Elk River watershed
Active zone
Susquehanna State Park
Active zone
Route 40 commercial corridor
Active zone
Primary SLF food source
Tree of Heaven in Cecil County, MD
Tree of Heaven is established along Cecil County's I-95 corridor and Route 40 commercial margins near Elkton, creating primary SLF dispersal pathways from the established Delaware and southern Pennsylvania infestation zones southward into the Maryland Chesapeake region. The C&D Canal and Elk River riparian corridors have Ailanthus populations along waterway margins that extend SLF habitat through the county's most ecologically significant waterways. Susquehanna State Park road margins and the Chesapeake City waterfront area are priority monitoring zones as SLF populations continue to establish across this critical northeastern Maryland gateway county.
Identify Tree of Heaven →Local action resources
What To Do in Cecil County, MD
Report a Sighting
Every sighting in Cecil County, 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 MD State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full MD guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Cecil County, MD. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Cecil County, MD.
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