Removing Comfrey

Thanks, PP. I had a feeling that might be the answer!

Veggie, what kind of things would be able to grow with pushy comfrey popping up around it and presumably the world's deepest most established roots hogging the ground?

I assume mine is a sterile variety - hasn't seeded around the plot although I let it get flowers for the bees, and has pinky/purple flowers. I think it's been there quite a while.