Skip to content
Watch Zone β€” Confirmed 2025

Spotted Lanternfly inRacine County, WISPOTTED LANTERNFLY GUIDE

Confirmed
2025
Population Served
196,000
Status
Watch Zone

Racine County occupies a critical position in the SLF monitoring landscape: it sits directly on the Wisconsin-Illinois border via its southern neighbor Kenosha County, placing it among the Wisconsin counties most immediately in the path of northward SLF spread from Illinois. Designated as a watch zone in 2025, Racine County is a Lake Michigan shoreline county with significant industrial port activity in the City of Racine and dense suburban development in Mount Pleasant and Sturtevant β€” communities that sit astride I-94 and receive heavy freight traffic from the Chicago logistics corridor daily. The Root River passes through Racine County from Burlington in the west to Lake Michigan in the east, creating a riparian dispersal corridor that could channel SLF from introduction points along I-94 into natural areas along the lakefront. Burlington, in the county's interior, is a growing community along the Fox River that draws goods and personnel from the broader Chicago-Milwaukee metropolitan zone. Sturtevant hosts a major Amtrak and freight rail interchange β€” one of the more significant rail nodes in southeastern Wisconsin β€” making it a particular monitoring priority for SLF introduction via rail freight originating in Illinois. Wisconsin DATCP regards Racine County as among the highest-priority watch zones in the state given its geographic exposure to established SLF populations just across the Kenosha County line.

Highest activity zones

SLF Hotspots in Racine County, WI

1

Racine

Active zone

2

Kenosha (county border)

Active zone

3

Mount Pleasant

Active zone

4

Burlington

Active zone

5

Sturtevant

Active zone

Primary SLF food source

Tree of Heaven in Racine County, WI

Lake Michigan shoreline industrial zones in Racine and along the Root River mouth support Tree of Heaven in disturbed port-adjacent habitats and riparian margins β€” a recognized SLF introduction pathway via lake freight and shoreline corridors. I-43 corridor through Mount Pleasant and Sturtevant carries Ailanthus in highway right-of-way connecting Racine County directly to the Illinois border at Kenosha, where SLF risk is highest. Menomonee River tributaries in adjacent Milwaukee County connect northward while the Root River provides an east-west Ailanthus dispersal axis through Burlington and toward the lakefront. BNSF and Union Pacific rail lines through Sturtevant's rail interchange represent a primary high-risk SLF introduction vector, channeling freight directly from the Chicago rail network β€” in established SLF territory β€” into southeastern Wisconsin.

Identify Tree of Heaven β†’

Local action resources

What To Do in Racine County, WI

Report a Sighting

Every sighting in Racine County, WI maps the invasion front. Report directly to Wisconsin DATCP.

Report Now β†’

Squish on Sight

See a spotted lanternfly? Kill it immediately β€” it is legal and encouraged in all states. Learn the best kill methods.

Full Fight Guide β†’

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 β†’

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 β†’

Community intelligence

Live Sighting Map

See where SLF has been spotted near you in Racine County, WI. Add your own sighting to help map the front.

Open the Map β†’

Free weekly fight briefing

Fight SLF in Racine County, WI.

One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in Racine County, WI.

No spam. One briefing/week during season. Unsubscribe anytime.