Killing Blackberry when pulling isn't an option
I am wondering if there's anything OK to use, or at least not horrendously awful, to kill blackberry bushes? I know pulling is the best option, but pulling isn't really an option for us because of the slope and the way the ivy has grown into the other landscaping.
Basically, we have a hillside (a downslope, directly below my lawn and veggie garden) that is a tangle full of creeping rose bushes, ivy, juniper, and some scotch broom. It's a tangled mess but it looks wild and mature and it's not high on our list of improvements. And it provides a nice privacy hedge. I don't even mind the ivy, because it tends to stay out of the lawn.
But in the last 2 years, the blackberry vines have ingratiated themselves amidst that hillside and now they're climbing up and over and under and right into my lawn and garden.
They must go! LOL
The other shrubbery is so dense, and the hill so steep, that we can't really get in there and pull out the roots. I thought I read somewhere that there's something you can apply with a paintbrush just to the blackberry bush to wipe it out.
I should also mention that I'm 100% behind organics, but I am not growing organically for anything other than my own personal use. So I don't have to worry about any certification or legal definitions of "organic." I'm just wanting to grow safe, healthy home grown food.