Agriculture Dept. Bans Sale of Cogongrass

... a non-native and aggressively invasive species of grass. The grass is sold under the names Japanese Blood Grass and Red Baron grass. Japanese Blood Grass is often grown as Kusamono Bonsai and as a companion plant for bonsai.

Source: http://bonsaibeginnings.blogspot.com/2008/04/agriculture-dept-bans-sale-of.html