Fiesta seems to kill everything that I need to have killed, except for chickory that is not only surviving the applications, but is getting by unscathed but for a few brown spots on a few of the weeds. I'm thinking I will either have to dig the weed up with a weed puller, torch it or spray it carefully with horticultural vinegar. Due to the dense clay soil in this region, weed-pulling is rarely successful for deep taproots. torching would require a few efforts to fully kill off the root, if it is going to be successful at all. and with the torching and vinegar, what a pain in the ass to have to spot spray these weeds and work very hard to prevent runoff onto the surrounding grass. Any suggestions on the best course of action for this specific weed?