My allotment plot has had this weed for a while but this season it’s become more invasive. It’s a terrible weed to get rid of as the roots can be very deep and hand weeding simply breaks it off but the smallest piece of root left can regrow. I hate using chemical weed killer but I may have to resort to using it at least on the paths between my beds which are mostly raised. Anyone had experience of this pernicious weed?