Spotted Lanternfly inAltoona, PASPOTTED LANTERNFLY GUIDE
Blair County confirmed SLF in 2021. Altoona sits at the base of the Allegheny Front — the Appalachian ridge that has historically slowed SLF's westward spread — but I-99 and US 220 are active vehicle corridors breaching that natural barrier. Horseshoe Curve National Historic Landmark, where railroads curve through forested mountain terrain loaded with Tree of Heaven, is a signature SLF hotspot. Canoe Creek State Park and the Juniata River corridor provide natural TOH habitat extending into the surrounding landscape.
Where it's showing up
Key Neighborhoods
Highest activity zones
SLF Hotspots
Horseshoe Curve / railroad heritage trail
Active zone
Canoe Creek State Park
Active zone
Lakemont Park
Active zone
Juniata River corridor
Active zone
I-99/US 220 interchange area
Active zone
Primary SLF food source
Tree of Heaven in Altoona, PA
Horseshoe Curve's mountain railroad cuts provide classic Tree of Heaven habitat — disturbed slopes, full sun exposure, and minimal competition allow TOH to colonize the hillsides, and SLF populations thrive along the historic rail corridor. The I-99/US 220 interchange area has established TOH along highway margins, serving as the primary westward spread vector across the Allegheny Front. Canoe Creek State Park and the Juniata River corridor extend TOH-supported SLF habitat beyond the urban core into Blair County's rural landscape.
Identify Tree of Heaven →Local action resources
What To Do in Altoona, PA
Report a Sighting
Every sighting in Altoona, PA maps the invasion front. Report directly to PA Department 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 PA State Guide
County-level data, quarantine zones, treatment guides, and agency resources for the entire state.
See the full PA guide →Community intelligence
Live Sighting Map
See where SLF has been spotted near you in Altoona, PA. Add your own sighting to help map the front.
Open the Map →Free weekly fight briefing
Fight SLF in Altoona, PA.
One email per week. Your zip code. Your threat level. Your action plan. Know exactly what to do this week in Altoona, PA.