Q: I live in the Pacific Northwest where blackberry bushes can be a real pain to get rid of. I just moved into a house that had a backyard full of them. I am almost done cutting them back. What is the best way to keep them from growing back?
Patty from Washington
Blackberry bushes can be tough so you need to be tougher. Here is what won't work: mowing, burning, or bulldozing. All these methods only stimulate sucker growth or sever stems and roots resulting in their spread. Short of becoming a goat herder, the most successful method is repeatedly tilling of the briars, keyword "repeatedly."
Although I'm not a proponent of chemical herbicides, some people report success by combining cutting back with Round-up or Bush-Be-Gone. If you choose this route, apply when the plants are moving sugars from cane to roots (after producing fruit). Avoid application when bushes are bearing fruit to keep birds, animals, and unsuspecting passersby safe.
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They are evil. There are two things that I've found to work: Roundup Brush killer and animals such as pigs that root around and eat the roots. (10/25/2005)
There is only one, I've known to work "Crossbow".
There is a few catches:
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