Spotted Lanternfly inMadison, WISPOTTED LANTERNFLY GUIDE
Madison, Wisconsin — the state capital and home to UW–Madison with a population of about 269,000 — entered spotted lanternfly watch status in 2025. Situated between four lakes with extensive university research farms and utility corridors, Madison presents unique monitoring challenges for early SLF detection. UW Extension and Wisconsin DATCP are actively coordinating outreach; residents should check outdoor furniture and vehicles, report suspected sightings, and assist with citizen science monitoring efforts.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
Downtown Madison
Active zone
Willy Street
Active zone
Shorewood Hills
Active zone
Fitchburg
Active zone
Monona
Active zone
Primary SLF food source
Tree of Heaven in Madison, WI
Yahara River corridor linking Madison's chain of lakes provides opportunistic Tree of Heaven habitat through the urban core. MG&E utility rights-of-way and UW research farms on the city's periphery add additional TOH establishment zones where early SLF colonization would be difficult to detect and suppress.
Identify Tree of Heaven →Local action resources
What To Do in Madison, WI
Report a Sighting
Every sighting in Madison, WI maps the invasion front. Report directly to Wisconsin DATCP.
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 WI State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full WI guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Madison, WI. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Madison, WI.
One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in Madison, WI.