An invasive plant is any plant that is not native to the environment in which it is found. They are generally considered to be aggressive and act in a manner that is not compatible with other plant species present. These non-native species come to our environment from a number of origins, including those that arrive in the bilge waters of ships from other countries, those that may have been intentionally planted for decorative purposed, and those that arrive through a number of “accidental” means.