"Robert" wrote ...
This is one of 6 identical plants from a fellow gardener's packet of
blight
resistant tomatoes... which that aren't ... are they? They look similar to
a
certain weed but surely for the whole packet to produce the same plant it
must be a garden worthy plant of some type. Can anyone help please?

http://uk.pg.photos.yahoo.com/ph/rob.../ph//my_photos


In everyone's book that is a weed, and you do not want it setting seed.
Either Persicaria maculosa or perhaps P. amphibia in it's emersed form.

--
Regards
Bob Hobden
17mls W. of London.UK