Spotted Lanternfly inFranklin County, MASPOTTED LANTERNFLY GUIDE
Franklin County — Massachusetts's most rural county — sits at the upper Connecticut River Valley where the river transitions from broad floodplain to narrowing headwaters terrain. Confirmed SLF in 2024 represents a significant northward advance: the county lies immediately upstream of Hampshire County, where UMass Amherst and Northampton anchor established Pioneer Valley populations. Greenfield, the county seat, is the northernmost significant SLF-confirmed urban center in western New England as of 2024. Turners Falls and Montague — industrial river towns built on hydropower and manufacturing — have infrastructure-adjacent TOH and disturbed land that accelerates SLF establishment. Deerfield's historic agricultural landscape, including tobacco and vegetable fields along the river floodplain, faces direct SLF feeding pressure. The rural nature of the county and limited monitoring infrastructure mean actual SLF distribution may exceed confirmed records.
Highest activity zones
SLF Hotspots in Franklin County, MA
Greenfield town center
Active zone
Turners Falls riverside (Montague)
Active zone
Montague industrial corridor
Active zone
Historic Deerfield agricultural lands
Active zone
Orange Route 2 corridor
Active zone
Primary SLF food source
Tree of Heaven in Franklin County, MA
Connecticut River floodplain through Greenfield, Montague, and Deerfield supports established Tree of Heaven populations along banks, former industrial margins, and US-5 corridor road edges — the primary SLF dispersal pathway through the upper Pioneer Valley. Pioneer Valley freight rail rights-of-way through Greenfield and Turners Falls carry Ailanthus colonization from Hampshire County populations northward. Orange's Route 2 corridor and Montague's industrial waterfront are priority monitoring zones as SLF continues to advance through Franklin County's largely rural and under-monitored landscape.
Identify Tree of Heaven →Local action resources
What To Do in Franklin County, MA
Report a Sighting
Every sighting in Franklin County, MA maps the invasion front. Report directly to MA MDAR.
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 MA State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full MA guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Franklin County, MA. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Franklin County, MA.
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