Posted: 22/04/2015 at 08:27
It does look like Japanese knotweed to me folks. Hope I'm wrong
Think you are wrong, on this very rare occasion Verdun - that looks like a sturdy shoot of Hedge Bindweed - with the base of the shoot having been underground it's blanched - there'll be a rhizome down below.
Bruise the leaves and treat with glyphosate and leave until the whole plant is brown and dead - that means that the active ingredients have travelled back to the roots and killed them. If you pull the plants up too soon the roots will not have been killed and will grow again.