In one of my borders close to a neeighbours fence I have several weeds of
similar appearance.When I dig them up they have thin white"tails" which
often break which means I am not getting down to the root.

I have tried leaving them in situ and giving doses of "Roundup" but apart
from the weed changing colour they never look completely dead.

When I do dig them up, another 10 or so start shooting up within about 5
days.

The area in question is often damp due to being against neighbours fence.
The other side of the fence is neighbours neglected area as their
conservatory is also close to the fence.

I have uploaded pics at http://tinyurl.com/frxta and would be pleased to
know the name of this weed and whether it is possible to control it.

Thanks.

M