Posted: 20/04/2016 at 08:11
I spent 20 years trying to fork it out of an area of the veg patch. Eventually I gave up, left it fallow for a year, gave it two doses of glyphosate, one in May and another for regrowth in august. That killed it.
It will save you years of work if you kill it off now. You lose a years planting, but save years of effort trying to fork it out.