How to get rid of invasive orange daylilies?
Thank goodness this is NOT my own problem! I am helping a friend to clean up his yard, which has suffered from years of neglect. Unfortunately, the previous owner planted the very invasive orange daylilies in the front foundation bed. Now it has completely taken over that bed and it is totally out of control!!! There is literally no room there except for this daylily and it is spreading like crazy, even across the concrete walkway to the other side! My friend's wife hates them and wants to get rid of them. She would like to start over and plant something else there instead.
I wonder if you have any suggestion as to how to deal with this situation? I know this is a daylily lovers' forum but then these invasive things are just out of control... thanks!