Posted: 16/09/2015 at 11:11
not much option but to dig it out, the yucca I mean. dig a trench as deep as possible around ...oh, cut off any sharp points first.......and lever,,push and pull. Ultimately it will yield. Take your time. Think of the opportunity to plant something nice when the yucca is gone.
much the same with the pampas I'm afraid but you will be mighty pleased and proud to remove these thugs.
do you have space to have a fire there? You could burn both, even bit by bit? Use the ash for your plants
good luck smallsvan