Invasive species are non-native plants, animals, insects or micro-organisms that cause negative impacts on the environment, economy, and/or society.
Invasive species in the GSCA Watershed
Learn more about the invasive species that can be found throughout our watershed, what GSCA is doing about them, and how you can help.
The Lymantria dispar dispar moth is native to Europe. It was introduced to Massachusetts in the 1860’s, and quickly escaped into nature.
Oak wilt is a vascular disease that affects oak trees. The disease is caused by the fungus Bretziella fagacearum.