Spotted Lanternfly inRockville, MDSPOTTED LANTERNFLY GUIDE
Montgomery County seat Rockville confirmed SLF in 2022 and is now heavily infested. The I-270 tech corridor and Metro Red Line are primary spread vectors, while Rock Creek Park's adjacent tree corridors provide dense Tree of Heaven habitat through the urban core. Proximity to the USDA Beltsville Agricultural Research Center adds federal research significance 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
Rock Creek Park margins through Rockville
Active zone
I-270 corridor tech campus zones
Active zone
Rockville Metro Red Line station area
Active zone
Croydon Creek Nature Center
Active zone
USDA Beltsville proximity corridor along US-1
Active zone
Primary SLF food source
Tree of Heaven in Rockville, MD
Rock Creek Park's margins through Rockville harbor extensive Tree of Heaven populations that support large SLF colonies spreading through Montgomery County's urban core. The I-270 tech corridor's highway margins and park-and-ride commuter lots concentrate vehicle traffic that moves SLF egg masses across the county. Metro Red Line stations are documented SLF spread nodes connecting Rockville populations directly to DC and the broader metro infestation zone.
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 Rockville, MD
Report a Sighting
Every sighting in Rockville, MD maps the invasion front. Report directly to Maryland MDA.
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 Rockville, MD. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Rockville, MD.
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