Please help me ID this volunteer that popped up in my yard last summer and came back this year. The picture isn't the greatest but it grows so close to the ground that I couldn't get a decent side view. It's more attractive in person than the photo shows. It grows slowly and it's smaller than the picture makes it look.

Thanks.

{{gwi:266385}}
P.S. There are a lot of sticks/twigs in the picture that are unrelated to this plant.