''Sonchus arvensis'', the field milk thistle, field sowthistle, perennial sow-thistle, corn sow thistle, dindle, gutweed, swine thistle, or tree sow thistle, is a species of flowering plant in the daisy family Asteraceae. ''S. arvensis'' often occurs in annual crop fields and may cause substantial yield losses.
''Sonchus arvensis'' is native to Europe, where it is widespread across most of the continent. It has also become naturalized in many other regions, and is considered an invasive.. more