Dame's rocket is native to Eurasia but was introduced to North America in the 1600's. A member of the mustard family, it has purple to pink flowers with four petals, characteristic of the mustard family. This plant usually grows in moist woodlands, woodland edges, roadsides, and open areas. The seeds of dame's rocket are eaten by ground-foraging birds.Dame's rocket is listed as a noxious weed by the United States Department of Agriculture. < www.invasive.org>
In 100 Years of Change in the Distribution of Common Indiana Weeds by William and Edith Overlease (2002) reported that Dame’s rocket was not found in Indiana in 1899 (Coulter’s Catalogue of Indiana Plants); however, in 1940 (Deam’s Flora) in the following Indiana counties: Dearborn, Jefferson, Johnson, Marion, and Montgomery. It was noted that “it was first reported from Grimes in 1910. Nieuwland reported it as escaped along the St. Joseph County in 1915. In 1921, I found it near Aurora in Dearborn County.”
In 2002, Overlease noted it was generally abundant. Dame’s rocket was found in the following 81 counties: Adams, Allen, Bartholomew, Benton, Blackford, Boone, Brown, Carroll, Cass, Clark, Clay, Clinton, Crawford, Daviess, Decatur, DeKalb, Delaware, Elkhart, Fayette, Fountain, Franklin, Fulton, Gibson, Grant, Greene, Hamilton, Hancock, Hendricks, Henry, Howard, Huntington, Jackson, Jasper, Jay, Jefferson, Jennings, Johnson, Knox, Kosciusko, LaGrange, Lake, La Porte, Lawrence, Madison, Marion, Marshall, Martin, Miami, Monroe, Montgomery, Morgan, Newton, Noble, Ohio, Orange, Owen, Parke, Porter, Pulaski, Putnam, Randolph, Ripley, Rush, St. Joseph, Scott, Shelby, Starke, Steuben, Switzerland, Tippecanoe, Tipton, Union, Vermillion, Vigo, Wabash, Warren, Washington, Wayne, Wells, White, and Whitely.