The spotted lanternflies you saw all summer are laying eggs right now, and those gray, mud-like smears on bark will hatch next spring.
Egg masses are about an inch long and look like dried putty or cracked clay. Check tree trunks, especially tree of heaven, maples, and black walnut, along with fences, stone walls, outdoor furniture, and vehicles parked under trees in Media, Lansdowne, and Broomall.
Scraping masses into a bag or container of rubbing alcohol destroys the eggs before they hatch. Heavy lanternfly feeding weakens already stressed trees and leaves sticky honeydew that grows sooty mold on everything below. Patios, cars, and decks under infested trees can end up coated by late summer.
If lanternflies have swarmed a particular tree year after year, it's worth having an ISA Certified Arborist assess its condition. Sometimes the right move is treatment, and sometimes it's removing an invasive host tree altogether.
#SpottedLanternfly #DelcoPA #TreeHealth #Arborist #PennsylvaniaTrees
A close-up of real spotted lanternfly egg masses on bark from a local property, ideally with a coin or hand for scale. A tree of heaven or maple trunk showing sooty mold is a strong alternative. Authentic local photos outperform stock.
Canva text suggestion: "Scrape the Eggs Before Spring Hatch" or "Spot Lanternfly Egg Masses This Fall"