Pike County's Spotted Lanternfly Crisis: What Pocono Homeowners Need to Know

An Invasive Pest Has Reached the Poconos

When the spotted lanternfly (*Lycorma delicatula*) was first detected in Berks County, Pennsylvania in 2014, experts knew it was only a matter of time before it spread. A decade later, it has marched steadily westward and northward — and Pike County is now squarely within Pennsylvania's spotted lanternfly quarantine zone.

For Pocono homeowners, this isn't just a nuisance issue. Spotted lanternflies cause real damage to trees, gardens, and outdoor living spaces. And Pennsylvania's quarantine requirements mean there are legal obligations for residents in affected counties.

What Is the Spotted Lanternfly?

*Lycorma delicatula* is native to China, India, and Vietnam. It was first introduced to South Korea in 2006, where it caused significant agricultural damage before being identified. In the United States, it was found in Berks County in September 2014, almost certainly arriving on stone shipments imported from Asia.

The spotted lanternfly is a planthopper — not a true fly — in the order Hemiptera. It feeds on plant sap using a piercing mouthpart, extracting nutrients from the phloem tissue of host plants.

The Lifecycle: What to Watch For Each Season

Understanding the SLF lifecycle helps you take effective action at the right time of year.

Egg Masses (October–May)

After mating in the fall, females lay egg masses on virtually any flat surface: tree bark, fence posts, outdoor furniture, siding, vehicles, firewood, stone walls, and even playground equipment. Fresh egg masses look like a gray putty or mortar smear, approximately 1 inch long, often with a slight sheen. Older masses dry and crack to reveal rows of brown seeds underneath. Each mass contains 30–50 eggs.

Early Nymphs (May–July)

Newly hatched nymphs are black with white spots, about the size of a pencil tip. They're highly mobile and will climb trees, fences, and buildings.

Late Nymphs (July–September)

Before reaching adulthood, nymphs transition to a striking red color with white spots and black stripes. This stage is often the most visible and alarming to homeowners unfamiliar with the insect.

Adults (September–November)

Adults have distinctive spotted gray and red wings. When at rest, only the gray outer wings are visible. In flight or when disturbed, the bright red hindwings flash. Adults are the most damaging stage and are the ones most commonly photographed and reported. They die in the first hard freeze.

Host Plants and What They Damage

The spotted lanternfly's preferred host is tree of heaven (*Ailanthus altissima*) — an invasive tree itself that grows abundantly throughout Pennsylvania's roadsides, rail corridors, and disturbed areas. However, SLF feeds on over 70 plant species, including:

• Hardwoods: Red maple, silver maple, black walnut, oak, birch, willow, poplar

• Fruit trees: Apple, peach, plum, cherry

• Crops: Grapes and hops (significant economic damage to PA wine and beer industries)

• Ornamentals: Rose bushes, lilac

The Damage Cycle

Heavy SLF feeding causes:

- Weeping, oozing sap on trunks and branches (called "weeping" or "bleeding")

- Wilting, curling, or browning of leaves

- Dieback of branches, starting at the tips

- Tree stress that increases vulnerability to secondary pests and disease

Beyond direct feeding damage, spotted lanternflies excrete large quantities of a sugary liquid called honeydew. This honeydew rains down from trees and coats everything beneath: decks, patio furniture, cars, garden plants, driveways. The honeydew then grows a black sooty mold that is unsightly, difficult to clean, and can damage plant surfaces.

Pennsylvania Quarantine Rules: What They Mean for You

Pike County residents are legally subject to Pennsylvania's SLF quarantine. The key requirement: before leaving a quarantine county, you must inspect your vehicle and any outdoor items for spotted lanternflies and egg masses.

This applies to:

- Vehicles (check wheel wells, undercarriage, and cargo)

- Outdoor furniture and equipment

- Firewood (do NOT move firewood out of quarantine counties)

- Landscaping materials, stone, mulch

If you see a spotted lanternfly or egg mass outside of Pennsylvania's known range, report it to the Pennsylvania Department of Agriculture at 1-888-4BADFLY or via their online reporting tool.

What You Can Do Right Now

Scrape and Destroy Egg Masses (October–May)

Use a plastic card or putty knife to scrape egg masses into a bag containing hand sanitizer or rubbing alcohol. Double-bag and dispose in trash. This is highly effective — one destroyed egg mass eliminates 30–50 potential insects.

Circle Traps

A circle trap is a mesh funnel wrapped around a tree trunk (especially tree of heaven) that intercepts SLF as they crawl up and down the tree. Effective for monitoring populations and reducing numbers.

Remove Tree of Heaven

Tree of heaven (*Ailanthus*) is the primary breeding host. Removing it from your property — or treating it with herbicide — eliminates the most attractive target. Note: cutting tree of heaven without herbicide treatment will cause it to re-sprout aggressively.

Professional Treatment Options

For high-value trees — large ornamental maples, established fruit trees, valuable landscape specimens — professional treatment is the most effective option.

Systemic insecticide injection (imidacloprid or dinotefuran) applied as a trunk injection or basal bark spray is the most effective treatment for individual trees. The insecticide is taken up through the tree's vascular system and kills SLF as it feeds. This approach is targeted, minimizes pesticide exposure, and protects specific trees for an entire season.

Preventive treatments timed to nymph emergence in late May/early June provide the best protection window.

If spotted lanternflies are destroying your outdoor spaces or threatening valuable trees, contact us for a spotted lanternfly assessment. We serve Pike, Monroe, Wayne, and Carbon counties throughout the Pocono region.