"Martin Brown" wrote in message
...

It is there that you are going wrong. Paradoxically to get optimum kill on
perennial weeds with big root systems you want to slightly 10-20% over
dilute the glyphosate so that the time for final kill is longer. That
allows more time for the stuff to work its way down to the roots.

If you use it too strong you just burn the tops off without killing any of
the roots and it will quickly regenerate at this time of year. Wastes
chemicals and has exactly the opposite effect of what you intend.

Ahh I Didn't Know That!!! Very timely advice Thank you!

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