weed control for established blackberry bush

Question

I have six year old established blackberry bushes that are becoming overgrown with various weeds. What type of weed control can be used that will not harm bushes?

Answer 1

If you are looking for a chemical solution, a broad leaf specific herbicide combined with a grass specific herbicide will take care of most weeds but will not hurt the blackberries.

For a more organic solution, a thick layer of mulch laid down (at least 3") will help suppress most weeds in the patch.