Invasive Species
Invasive Forest Insects
Emerald ash borer. Courtesy photo from bugwood.org, by David Cappaert, Michigan State University.
There are hundreds of species of non-native insects in our forests; several species, due to lack of host resistance and lack of natural enemies, have caused significant damage to our natural and urban forests. Infestations by non-native insects can significantly impact a…
#InvasiveSpecies, #ForestHealthProtection, #Insects
Protecting the Forest
Effective beginning 5/30/2025
This website, and all linked websites under the control of the agency is under review and content may change.
Native Forest Insects and Diseases
Southern pine beetle damage on the Snoopy Plantation, Indian Mounds Wilderness Field. Texas A&M Forest Service photo by Ronald F. Billings.
Native insects and pathogens are an important…
#ForestHealthProtection, #Insects, #InvasiveSpecies, #Climate
Forest Service helps defend 9/11 witness trees from insect threat
Hemlocks are placed ready to plant at the Flight 93 National Memorial near Shanksville, Pennsylvania. (USDA Forest Service photo)
Twenty years have passed since the 9/11 attacks, yet there’s a feeling of permanence in a hemlock grove that stands where so many lives were lost that day in…
#EmeraldAshBorer, #InvasiveSpecies, #ForestHealth
Callery pear publication talks treatment, control
Callery pear is rapidly spreading in the U.S. and is well-known for its ability to thrive under a wide range of environmental conditions. Photo courtesy Leslie J. Mehrhoff, Bugwood.org.
Callery pear (Pyrus calleryana) can be found across most of the eastern U.S. and in a few western states as well. The nonnative tree was brought to the U.S. in…
#Trees, #InvasiveSpecies
The invasion of the forest destroyers – And how science is fighting back
This ash tree on the Allegheny National Forest is showing early symptoms of Emerald Ash Borer infestation, including crown thinning. (USDA Forest Service photo by Kathleen Knight)
Change is inherent in forests, but insects and pathogens that have been inadvertently introduced, known as…
#EmeraldAshBorer, #NorthernResearchStation, #InvasiveSpecies
Defending Favorite Places
How Hunters and Anglers Can Stop the Spread of Invasive SpeciesAmerica's hunters and anglers represent essential stakeholders in combating invasive species threatening native fish and wildlife populations and their habitats. Preventing and controlling invasive species is an achievable goal. Linking invasive species management principles with the hunting and angling conservation ethic is critical…