Hi, Gregg,
Thank you for asking this particular question. Thanks, rickj, for the link. You have also helped me with a similar problem; with VA Wild Violets! Looks similar, with the tube runners below ground, and the "knobs" attached for each individual cluster of above ground leaves.
This stuff is awesome, growing very, very quickly in the spring and summer.
It is hard to get rid of, but can be done. I have used about every 7 days, a spray consisting of Ortho Max Weed Killer, mixed with a little Dawn Dishwashing Detergent. The detergent helps it stay on the leaves. It will eventually kill it, even the root "Knobs", but it does take about a month before it's gone!
This Max week killer does not kill grass, only weeds.
I agree that the best way would be to possible use a tiller, then using a rake to remove all traces (or as much as possible) of the roots, then go from there.
PS; As an edit, I will look for the Glyphosfate (spelling?) cause I have some stuff behind my back privacy fence that I want to kill... all of it!
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