Spotted Lanternfly inMilwaukee, WISPOTTED LANTERNFLY GUIDE
Milwaukee, Wisconsin — a Lake Michigan port city of about 577,000 — entered spotted lanternfly watch status in 2025 as SLF pressure expanded westward through the Great Lakes corridor. The city's industrial waterfront, Menomonee River brownfield corridors, and heavy freight rail connections to Chicago make it a high-priority early-detection zone. Residents and dock workers should inspect vehicles, report any suspected sightings to Wisconsin DATCP, and monitor Tree of Heaven stands along river margins and rail rights-of-way.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
Walker's Point
Active zone
Bay View
Active zone
Menomonee Valley
Active zone
Harbor District
Active zone
South Side
Active zone
Primary SLF food source
Tree of Heaven in Milwaukee, WI
Menomonee River brownfield corridor and Lake Michigan port facilities provide prime Tree of Heaven habitat connecting Milwaukee's industrial waterfront to the broader urban canopy. Union Pacific and BNSF rail yards running through the city are major freight hubs where SLF egg masses on vehicles and railcars represent the most likely introduction pathway.
Identify Tree of Heaven →Local action resources
What To Do in Milwaukee, WI
Report a Sighting
Every sighting in Milwaukee, 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 Milwaukee, WI. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Milwaukee, WI.
One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in Milwaukee, WI.