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The spotted lanternfly (Lycorma delicatula) is an invasive insect from China and Southeastern Asia. Scientists first saw this insect in the United States in 2014. The spotted lanternfly had made its way to eastern Pennsylvania, but now it has traveled as far south as Frederick County, Virginia. This species poses a looming threat to native plant species and agricultural crops.
An interesting thing about the spotted lanternfly is that one of the plants it depends on to survive is tree of heaven (Ailanthus altissima). Tree of heaven is widespread throughout the United States, but it's also an invasive species from China. It's the spotted lanternfly’s preferred host tree, and that's why the National Capital Area Invasive Plant Management Teams (IPMT) work with parks and local partners to manage tree of heaven to prevent or slow the spread of the spotted lanternfly.
In 2019, the IPMT conducted basal bark treatments of tree of heaven over more than 125 acres of forest in parks. This treatment requires staff to apply chemicals directly to the bark of these invasive trees. The IPMT also worked with partners at Crow’s Nest in Virginia and the US Fish and Wildlife Service’s National Conservation Training Center in West Virginia. Quick action is key to preventing the spotted lanternfly from expanding its range because when this species invades, individuals spawn quickly, threatening a range of tree species and becoming difficult to eliminate.
In addition to hosting the dangerous spotted lanternfly, tree of heaven threatens both natural and cultural resources. This plant grows through foundations, structures, and archeological sites causing irreversible damage. By treating these trees, the team is stopping the spread of a dangerous invasive insect and protecting cultural and natural resources entrusted to the National Park Service. Learn more about the spotted lanternfly in the National Capital Area.
Last updated: September 14, 2020
