I'm wondering if anyone could help me with a strange occurrence with a few Clematis plants. We planted 3 plants last year in the spring and a rabbit got them because we were inexperienced. So we left the rooted remains thinking they were done. This year we noticed that the stems had gotten thick and they sprouted. We thought, WOW, they came back and began caring for them. But now that they have grown, they have a fern like appearance - not a vine at all. They are definitely growing from the original stems. We haven't planted anything else in this area and it looks nothing like anything in our yard. I just can't figure it out and I don't want to continue caring for them if their weeds. We due have other Clematis so I do know what they should look like. Any thoughts?