Sisymbrium loeselii is a species of flowering plant in the mustard family known by several common names, including small tumbleweed mustard, tall hedge mustard, and false London rocket.

Sisymbrium loeselii is a species of flowering plant in the mustard family known by several common names, including small tumbleweed mustard, tall hedge mustard, and false London rocket.

Common names of the plant include Jim Hill mustard, after James J. Hill, a Canadian-American railroad magnate, Tall mustard, Tumble mustard, tumbleweed mustard, tall sisymbrium, and tall hedge mustard.