In article ,
Rick Hughes writes:
Been trying to kill off Mares Tail with Glyphosphate ........ almost
zero impact

Parts of my garden wwere covered in it when I moved in.

The brusing technique mentioned above works, but you need to combine
that with hitting it at the right time of year - just as it stops
growing for the current year prior to dying off for the winter.
That's when the plant draws back nutrients from the stems to store
over winter in the roots (which are very deep). You want it to draw
back the glyphosate too, so it sits in the roots over winter and
has a long chance to kill them whilst they are inactive. Even so,
it will take 2-3 years to knock it on the head, and you'll always
get the odd one popping up afterwards which you can handle
individually.

My garden is almost completely free of it for 10 years now, although
since there are gardens nearby covered in the stuff, I have to be
dilegent in taking out the occasional new one.

--
Andrew Gabriel
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