Centaurea iberica, the Iberian knapweed or Iberian star-thistle, is a species of Centaurea. It is native to southeastern Europe and southwestern Asia. It is known elsewhere as an introduced species and a noxious weed. Control Aminocyclopyrachlor + chlorsulfuron, aminopyralid, chlorsulfuron alone, clopyralid, clopyralid + 2,4-Dichlorophenoxyacetic acid, dicamba, diflufenzopyr + dicamba, picloram, and triclopyr + clopyralid for the Pacific Northwest of North America. References External links Jepson Manual Treatment Photo gallery iberica Flora of Lebanon Plants described in 1826