Spotted Lanternfly inBethesda, MDSPOTTED LANTERNFLY GUIDE
Bethesda — home to NIH and one of the most affluent DC suburbs — confirmed SLF in 2022 and is now heavily infested. The Red Line Metro Bethesda station connects directly to DC's established infestation zone, and the Capital Crescent Trail's former rail right-of-way provides classic Tree of Heaven habitat running through the community. NIH campus and Bethesda's dense affluent residential tree canopy sustain large SLF populations, and the Wisconsin Avenue commercial corridor concentrates vehicle traffic accelerating spread. MD statewide quarantine in effect as of March 2026.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
NIH campus perimeter (affluent tree canopy with ToH in disturbed edges)
Active zone
Capital Crescent Trail corridor (ToH along former rail right-of-way)
Active zone
Wisconsin Avenue commercial corridor margins
Active zone
Battery Lane Park (urban green space with established ToH)
Active zone
Red Line Metro Bethesda station area
Active zone
Primary SLF food source
Tree of Heaven in Bethesda, MD
The Capital Crescent Trail's former rail right-of-way provides classic Tree of Heaven colonization habitat — disturbed rail corridor soils with established ToH running through the heart of Bethesda create a prime SLF spread pathway. NIH campus perimeter and surrounding Medical Research Park greenspace have ToH in disturbed edge habitat. Bethesda's affluent residential tree canopy — dense with mature hardwoods — supports large SLF colonies spreading through Montgomery County's most prominent medical and research community.
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 Bethesda, MD
Report a Sighting
Every sighting in Bethesda, 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 Bethesda, MD. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Bethesda, MD.
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