One of the most helpful things you can do, besides actual removal of invasive plants, is to report them. Here is a list of species we would like more distribution information on in Knox County: Knox County Watch List.
You can report the invasive plant species you find on EDDMaps: http://www.eddmaps.org/indiana/report/
And there is a smarphone app called “GLEDN” (which stands for Great Lakes Early Detection Network) that can be used to record entries in the field. That app can be found on Google Play here.