Spotted Lanternfly inAnn Arbor, MISPOTTED LANTERNFLY GUIDE
Washtenaw County entered a confirmed SLF watch zone designation in 2024 with Ann Arbor — home to the University of Michigan and its 47,000-student campus — at the center of monitoring efforts. The U-M campus's extensive hardwood tree canopy and the Huron River corridor running through the city provide prime SLF establishment habitat. I-94 is the primary vehicle-based introduction vector connecting Ann Arbor to confirmed Ohio populations, and U-M's large research community brings significant vehicle traffic from across established SLF territory. U-M's School for Environment and Sustainability is an active partner in SLF early-detection monitoring throughout Washtenaw County.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
University of Michigan central campus
Active zone
Kerrytown farmers market district
Active zone
Burns Park neighborhood tree canopy
Active zone
Huron Hills Golf Course corridor
Active zone
Ypsilanti border zone along Michigan Ave
Active zone
Primary SLF food source
Tree of Heaven in Ann Arbor, MI
Tree of Heaven is established along Ann Arbor's railroad corridors, urban vacant lots, and the Huron River riparian margins — providing the habitat base needed for SLF establishment as detection pressure builds from Ohio via the I-94 corridor. U-M campus edges, Kerrytown district disturbed lots, and the Ypsilanti border zone along Michigan Ave have documented ToH populations. The Huron River and adjacent Gallup Park corridor are priority early-detection monitoring zones.
Identify Tree of Heaven →Local action resources
What To Do in Ann Arbor, MI
Report a Sighting
Every sighting in Ann Arbor, MI maps the invasion front. Report directly to Michigan EGLE.
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 Michigan State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full Michigan guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Ann Arbor, MI. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Ann Arbor, MI.
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