A week later I went back and removed most of what was left. I certainly did not remove all, and of course it will grow back, but I'm sure I have removed quite a significant amount of time's worth of bramble growth. (And quite some balsam.) So so far so good! Now I need to get that injector going again. I hope I can do that! And if not? Maybe buy another one I suppose, and hope it lasts a bit longer. Having it done professionally must be a heck of a lot more expensive. But it might have to be done! We'll see. At least now we have a river bank that's fairly comfortable to negotiate. And that may come in handy if we get another heatwave this summer, and I'll be wanting to cool off in the river!
Bramble in front of a knotweed stalk
The riverbank now
The pile of bramble cuttings