The Park Service is in the process of writing a comprehensive Invasive Plant Species Management Plan to prevent and/or stop existing problems. Please send the NPS your thoughts on this issue. I do prairie restoration and invasive plants are a big problem. I am glad this issue is being addressed.
http://parkplanning.nps.gov/projectHome ... ctId=34281
Invasive Plant Species Management Plan Scoping
Moderator: srparr