Posted: 17/07/2016 at 21:30
I just let it get on with it. While it's in bloom I just cut off any shoots without flower buds. When it's finished flowering, I hack it - within reaso. In in the spring, I give it a bit of fertiliser and I water it when I think of it. It will never be tidy. Mine is growing in a huge container that used to have a tree in it. I suspect that it's burrowed down into the soil under the patio. Anyway, it's been there for more than ten years. Benign neglect seems to suit it.