On Sun, 24 Oct 2010 11:32:50 +0100, "Pete"
wrote:



"Pam Moore" wrote in message
.. .
Why buy it now? The weather is already too cold for it to have a full
effect - applied at this time of year is a waste


Many of the more stubborn weeds inc. Japanese Knotweed are considered to
be more likely to be affected by poison if sprayed as they are winding
down for the year as they take the stuff into the roots.

But in September, not now. Now is surely too late.


Probably.

I have always considered that the take up would be more effective on most
stuff, when it is growing
at it's most vigorous - late spring to early summer.

"THEY" say that the plant draws the poison down into its roots at the
end of the season.

Pam in Bristol