Is this a Prairie Mallow

Question

I planted this in the spring of 2014 and when it started to grow the leaves were different. They were more rounded with wavy edges (scallop type). This plant has also spread wider than described and it has lots of thorns along the stems! I am thinking it is some kind of Rose? I know I did not buy a rose plant at that time. I am attaching photos if someone could help.

Answer 1

We didn't get the images.

Mallow does not have thorns.

Here is a link.

https://www.gardeningknowhow.com/ornamental/flowers/common-mallow/controlling-mallow-weeds.htm