I think of both foxgloves and dame's rocket as biennials. I have no luck with any of the foxglove cultivars reseeding, but I do enjoy the wild ones that grow in the ditches. I've also never had luck with dame's rocket reseeding. Maybe I'm too aggressive with early spring weeding and don't recognize the first year seedlings. I'm envious of anyone who can rely on reseeding, whether it be annuals, biennials, or perennials. It's just rarely a happening thing for me.