On Fri, 15 Jun 2012 17:26:08 +0100, "Bob Hobden"
wrote:
[...]
** works only on green leaves, you spray them and they take it down to the
roots and it then kills the plant. It does become degraded in the soil so
will leave no lasting weedkiller.

If I may drift the thread a little, I said very firmly, on a
non-gardening newsgroup in which the subject had arisen for some
reason, that glyphosate worked only on growing green parts of plants.
I was equally firmly told by a couple of posters that they had
successfully used glyphosate to kill leafless stumps. Are we
underestimating the compound's power?

--
Mike.