Spotted Lanternfly inConcord, NHSPOTTED LANTERNFLY GUIDE
Concord, New Hampshire — the state capital with a population of about 44,000 — entered spotted lanternfly watch status in 2025 as SLF surveillance expanded into southern and central New Hampshire. Located along the Merrimack River with former industrial sites and a historic rail corridor, Concord presents several potential SLF introduction and establishment points that authorities are actively monitoring. Residents should learn SLF identification, check vehicles arriving from Massachusetts or southern NH, and report any suspected sightings to the NH Department of Agriculture.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
Downtown Concord
Active zone
Penacook
Active zone
East Concord
Active zone
South End
Active zone
Bow border
Active zone
Primary SLF food source
Tree of Heaven in Concord, NH
Merrimack River banks running through Concord harbor Tree of Heaven stands at former industrial sites that would serve as primary SLF host habitat. Former industrial sites along the I-93 corridor and the planned NH Capitol Corridor rail route are key movement pathways connecting Concord to confirmed SLF populations in Massachusetts to the south.
Identify Tree of Heaven →Local action resources
What To Do in Concord, NH
Report a Sighting
Every sighting in Concord, NH maps the invasion front. Report directly to NH Dept of Agriculture.
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 NH State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full NH guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Concord, NH. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Concord, NH.
One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in Concord, NH.