Grazon Extra unites the proven combination of picloram and triclopyr from the original Grazon*DS with the highly active new aminopyralid molecule from Dow AgroSciences. On “hard to kill” blackberry (stressed and treated with a herbicide) chosen to test the toughest herbicides, Grazon Extra easily outperformed metsulfuron + glyphosate and even the old Grazon DS which will be replaced by Grazon Extra.