Spotted Knapweed = Centaurea maculosa

A citationed defense of spotted knapweed is presented on p62 of Timothy Lee Scott's book, "Invasive Plant Medicine, The Ecological Benefits and Healing Abilities of Invasives", available from Amazon http://tinyurl.com/34wf28u or from B&N http://tinyurl.com/3ajl2cr

Scott's book and its citations support a rationale wherein "invasive" plants are helping heal damaged ecosystems.