Can you identify these?
These are the one plant in my garden that I haven't been able to get rid of yet and I think I've been too easy on it. It was here when we moved in. This year I want to get serious about it and I thought it would help to get a definite identification. I haven't let it flower for years, so I don't have a photo of it when in bloom, but it looks like Adenophora or Campanula to me. Grows to about 3ft tall.
I've tried a lot of digging, heavy mulching, cutting off the foliage at the ground repeatedly, so far it just keeps coming back.