Hi Harry, Janet

If you apply this weed killer it will kill the whole plant. There is
no possibilty of you doing what you describe.

except that I've done it before - sprayed the thing and the whole plant
hasn't died.

You might argue as to the reasons - insufficient spray, too concentrated/not
concentrated enought, ro whatever. But it's not a black and white situation.

I want to at least get the plant under control, without having to go round
to the neighbour's side and sort it out there. If it dies along the way,
fine by me. But just hacking my part back doesn't work, as evidenced in
previous years. Hence the question.

Regards
Jon N