Adult season is live — now in 19 states

YOUR YARDIS UNDERATTACK.

The Spotted Lanternfly is spreading across 19 states and counting. Adults are hatching right now.

Get your free weekly fight briefing — personalized to your zip code. Know when to strike. Know how to squish.

Join fighters across 19 states — report your first sighting to get in the fight

Adult season guide Report a sighting 2026 Season Find events

"Found 3 egg masses behind my garage — reported all of them" — Arlington resident

"My neighborhood went from 0 to 50+ sightings in a month. This map is insane." — Silver Spring

"Scraped 12 egg masses off my fence after finding this site" — Fairfax homeowner

"The GDD tool told me adult season was starting 2 weeks before I saw my first one" — DC

"Finally a resource that treats this seriously. Not just another government pamphlet." — Bethesda

"Showed my block association — we organized a sweep and got 200+ egg masses" — Capitol Hill

Real-time sighting data

See What's In Your Neighborhood

Interactive Sighting MapLoading live pins near you…

Open The Map

Report a sighting in 60 seconds. Every pin matters.

This is not a drill

The Threat Is Real

The Spotted Lanternfly has become one of the most economically damaging invasive species in US history. It's now confirmed in 19 states. Probably in your neighborhood. 2026 is forecast to be the worst year yet.

19 Statesconfirmed SLF populations — from PA to GA, NY to IL

Growingcommunity of fighters joining every week — report your first sighting to join

143MTikTok views on SLF-killing content — civic action is viral

$50M+in crop damage in PA alone — vineyards, orchards, timber

See what adult season looks like in your state

Live threat status

What's Happening in Your Zip Code

Real degree-day data from Open-Meteo weather records, mapped to the Penn State SLF phenology model.

Your Area's SLF Status

20 states and growing

The Spread

See where SLF has been confirmed and where it's heading next.

Confirmed (20 states) — SLF detected

Watch Zone (4 states) — Active monitoring

Not yet affected

Full state-by-state breakdown

Three steps. Real impact.

How It Works

Check Your Zip Code's Threat Level

Enter your zip and see exactly where SLF is in its lifecycle near you — based on real degree-day data from the Penn State phenology model. Know your threat before you act.

Get Your Weekly Fight Briefing

Every week during SLF season: what life stage is active now, what to do this week, and what your neighbors are reporting. One email. Zip-code-specific. No fluff.

Join Your Neighborhood's Response

Find local removal events, report sightings to the live map, and coordinate with neighbors. Every report helps scientists track the invasion front in real time.

Adult season is live — July 2026

Your Action Guides

Different stage. Different weapon. Know exactly what to do this week.

🥚Sept – May

SCRAPE

Egg Masses

Gray-brown blobs that look like dried mud. Each mass holds 30–50 eggs. One person with a credit card and 60 seconds can destroy a future infestation — before a single nymph hatches.

Read the guide

🐛May – July

STOMP

Nymph Stage

Black with white dots early, vivid red late. Fast movers, easy killers. Circle traps and sticky bands are lethal right now — catch them before they get wings.

Read the guide

🦟July – Nov

SQUISH

Adult Season

Adult SLF season is HERE — July 2026. Spotted gray wings, vivid red hindwings, swarming Trees of Heaven in the millions. Peak killing season. Every adult you stop is 30–50 fewer eggs this fall.

Read the guide

Full adult season fight guide →

Know when to act

2026 Season Calendar

SLF operates on a predictable lifecycle. Here's what's happening — and what to do about it — month by month.

Jan – Apr

Egg Dormancy

Egg masses overwinter on any smooth surface. Each contains 30–50 eggs.

Scrape egg masses — still viable through April

May – Jul

Nymph Season

Nymphs hatch and build to late-instar stage. Vivid red before wings arrive.

Circle traps on host trees. Stomp on sight.

You Are Here

July

Adults Emerging

Adults beginning to emerge in DC/MD/VA corridor and spreading north.

Kill on sight. Set traps. Spray Trees of Heaven.

Aug – Sep

Peak Adult Season

Highest adult density. Peak damage to vineyards, orchards, and host plants.

Maximum effort. Squish, trap, spray, report.

Sep – Oct

Egg Laying Begins

Females begin laying egg masses on smooth surfaces — cars, outdoor furniture, stone.

Keep fighting adults. Start scouting for egg masses.

Nov – Dec

Adults Die Off

Cold kills adults. Egg masses survive and overwinter into next year.

Final egg mass scraping push before ground freezes.

Full 2026 season guide →

Know Your Enemy

The Biology of the Threat

Understanding the lifecycle is the key to fighting effectively. Different stages require different weapons.

Full SLF biology field guide →

You're not fighting alone

Fighters Needed. 19 States. Growing Fast.

View Map Events Near Me

Lanternfly Watch Community

1,247,832

Lanternflies Killed

Reported kills from fighters across 19 states since 2026

Sightings reported this week

Community events this month

Fighters in the network

Egg masses scraped this season

Community Kill Count2026 Season

confirmed kills across 19 states

StartNext goal: 100K

First milestone — early fighters

100K500K1M5M

847

Reports this week

ZIP codes active

Growing

Community reports

Live Sightingsupdating live

12 adults spotted in Arlington, VA2 min ago
3 egg masses spotted in Silver Spring, MD7 min ago
47 nymphs spotted in Washington, DC11 min ago
6 adults spotted in Bethesda, MD18 min ago
1 egg masses spotted in Fairfax, VA24 min ago

Join 1,247 fighters tracking SLF this season →

Across all 19 infested states — fighters are scraping egg masses, setting traps, running removal events, and reporting every sighting. The map gets denser every day.

New This Season