Rule #1 with glyphosate: always dilute to only half what the manufacturer
states on the side of the pack. I.E., use double strength to avoid
anguish.

You have been warned.

Hmmm.....debatable. What will likely happen is that you'll get a
good quick kill to the foliage, but a percentage of the plants
will continue to live/reshoot.

If you mix and apply as recommended, it may take some time i.e. 1, 2,or 3
weeks for the weeds to die, but during this period, the poison is drawn
down into the plants' roots, and the entire plants will die.

If two or so weeks is too long to wait for weeds to die, bend over and dig
the damn things out!! :-)

Of course, as with everything there are always exceptional circumstances.

Charles
--
If some days are diamonds and some days are stone....
Then some days I live in a quarry!!