An invasive species is a non-native species (including seeds, eggs, spores, or other propagules) whose introduction causes or is likely to cause economic harm, environmental harm, or harm to human health. The term "invasive" is used for the most aggressive species. These species grow and reproduce rapidly, causing major disturbance to the areas in which they are present.
Invasive species, if left uncontrolled, can and will limit land use now and into the future.
The longer we ignore the problem the harder and more expensive the battle for control will become.
Invasive species can decrease your ability to enjoy hunting, fishing, camping, hiking, boating and other outdoor recreational activities.
The United States suffers from $1.1-120 billion per year in economic losses due to exotic, invasive species.1, 2
Approximately 42% of Threatened or Endangered species are at risk due to non-native, invasive species.1
old world climbing fern
Photo by: Peggy Greb, USDA ARS
2 OTA. 1993. Harmful non-indigenous species in the United States. Office of Technology and Assessment, United States Congress, Washington DC.