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Debbie Dingman

Greg Frink asked:

Aug 28, 2014

Debbie Dingman answered:

Nov 6, 2014

I would wait until the first frost, that very next day spray or paint leaves with Crossbow (if spraying isn't an option, as in beds with other plants or single shoots).  The sap in the stems will draw the herbicide down to the roots as the blackberry plant goes dormant in winter and kill it at the roots.  May have to repeat again the next year, but it has been very effective for us.    

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