Spotted Lanternflies in PA: What Homeowners and Farmers Need to Know
Spotted lanternflies have become one of the most talked-about invasive pests in Pennsylvania — and for good reason. Since first being discovered in Berks County in 2014, these invasive insects have spread rapidly across the region, threatening trees, vineyards, farms, and residential landscapes. While they don’t bite or sting, spotted lanternflies can cause serious damage to plants and create major nuisance issues around homes and businesses.
Understanding what spotted lanternflies are, why they’re spreading, and how to control them can help protect your property from costly damage.
What Are Spotted Lanternflies?
Spotted lanternflies (Lycorma delicatula) are invasive planthoppers native to Southeast Asia. Adult lanternflies are about one inch long and are easily recognized by their gray wings with black spots and bright red underwings. Younger nymphs look very different, starting out black with white spots before developing red coloration later in their life cycle.
Although they may look harmless, spotted lanternflies feed by piercing plants with a straw-like mouthpart and sucking out sap. Their favorite host is the invasive tree-of-heaven, but they also attack grapevines, walnut trees, maples, fruit trees, hops, and dozens of other hardwood species.
Do Spotted Lanternflies Bite?
One of the most common questions homeowners ask is whether spotted lanternflies bite people or pets. Fortunately, the answer is no. Spotted lanternflies cannot bite or sting humans because their mouthparts are designed only for feeding on plants.
However, that doesn’t mean they’re harmless. Large infestations can stress trees and crops, weaken plants over time, and create sticky messes around your property.
Why Are Spotted Lanternflies Such a Problem in Pennsylvania?
Pennsylvania has become one of the hardest-hit states because spotted lanternflies thrive in the region’s climate and have very few natural predators here. Since their arrival, populations have exploded across residential neighborhoods, farms, vineyards, and wooded areas.
Female lanternflies lay egg masses containing 30–50 eggs at a time, often on trees, outdoor furniture, vehicles, stone, and even buildings. Those eggs survive the winter and hatch in spring, continuing the infestation cycle year after year.
Because they spread easily by hitchhiking on vehicles, firewood, pallets, and outdoor equipment, infestations can grow quickly if left untreated.
Signs of a Spotted Lanternfly Infestation
Homeowners often first notice spotted lanternflies gathering on trees, siding, decks, fences, or patios during late summer and fall. Heavy infestations may also cause:
- Sticky honeydew residue on outdoor surfaces
- Black sooty mold growing on trees, decks, or furniture
- Increased bee and wasp activity attracted to the sugary residue
- Trees that appear stressed or weakened
- Large groups of lanternflies climbing tree trunks or walls
Some homeowners even describe infested trees as “raining” due to the amount of honeydew falling from above.
Can Spotted Lanternflies Kill Trees?
Researchers continue to study the long-term effects of spotted lanternfly feeding, but heavy infestations can absolutely weaken trees and plants over time. Repeated feeding removes vital sap from the plant, reducing overall health and making trees more vulnerable to drought, disease, and secondary insect damage.
For Pennsylvania farms and vineyards, the stakes are even higher. Spotted lanternflies are considered a major threat to grapevines, hops, fruit trees, hardwoods, and other agricultural crops throughout the state.
How to Get Rid of Spotted Lanternflies
Because spotted lanternflies reproduce rapidly, early treatment is critical. DIY methods may help reduce small populations, but professional treatment is often the most effective option for larger infestations.
At Viking Pest Control, spotted lanternfly management may include:
- Tree banding to intercept climbing nymphs
- Targeted liquid treatments for residential and commercial properties
- Property inspections to identify infestation hotspots
- Customized treatment plans based on your landscape and level of activity
Professional treatments are designed to reduce spotted lanternfly populations while minimizing impact on beneficial wildlife and surrounding vegetation.
Homeowners can also help reduce activity by:
- Scraping and destroying egg masses
- Removing tree-of-heaven where appropriate
- Inspecting outdoor furniture, vehicles, and firewood
- Monitoring trees during spring and summer
Protect Your Pennsylvania Property from Spotted Lanternflies
Spotted lanternflies are more than just a nuisance pest. Left untreated, they can create serious problems for homeowners, businesses, farms, and vineyards throughout Pennsylvania.
If you’re seeing spotted lanternflies around your home or property, professional treatment can help reduce populations before they spread further. Learn more about Viking’s Spotted Lanternfly Control Services, for seasonal prevention tips, or contact Viking Pest Control today to schedule an inspection.
