This is a picture of what you call a wild rose bush. It is coming up from the roots instead, not the branches. All my roses died this year. Now I am getting this wild thing showing up in place of my other. It only happened to the one bush. LOL! I would have taken the wild rose on all mine if possible since I lost 15 of them this spring.
For those of you who have sturdy rose bushes, you know that if you get a wild growth it must be cut off right away. It can harm your regular rose bush.