"Poa pratensis commonly known as Kentucky bluegrass (...) [is a] species of grass native to practically all of Europe, North Asia and the mountains of Algeria and Morocco. It is a common and incredibly popular lawn grass in North America (...) despite the fact that it is not native to North America. (...)When found on native grasslands in Canada, for example, it is considered an unwelcome exotic plant, and is indicative of a disturbed and degraded landscape."