A bunch of these have started growing on the north side of my house. I've never seen them before and was curious what they are.
Rough avens. Geum laciniatum. A weed. I pull them on sight, because they develop an annoying burr-like fruit that contains "sticktight" seeds that cling to clothing and get stuck in dog fur.
The lack of long hairs on the stems and relatively large petals suggests Geum canadense.