Q.marionberry canes
How do I prevent wild blackberries from invading my marion canes? I live near Salem, Oregon and we’re always finding volunteer canes everywhere/
These plants can be a bit of a hassle to control. The best, and safest method for removing blackberries, is to manually dig them up by hand. They are quite invasive and will continue to come back. It would be hard to recommend an herbicide as they will likely kill plants that you didn't want to kill as well... I'm sorry but there isn't an easy answer to this one. Set aside a time to remove daily or weekly and you will have those out of there in no time