Is this Japanese Knotweed
I've seen a few posts like this on the site and need some help. I've just moved into a new flat and the survey showed that there was Japanese Knotweed at the bottom of the garden
I think this is it. There are 3 shoots. Including this big one
My question concerns the stuff in the background. I'd assumed that it was an old strand of Bamboo that had died but when I pulled up the large Japanese Knotweed shoot today it suddenly struck me that this stuff looks very like it. It seems very dead and very dry and woody.
and this appears to be the base of it
Have I got a bigger problem than I first thought?
Any help/advice greatly appreciated.