I don't know what plant that might be ... a gift from the birds perhaps but it appears to have woody looking stem so you may have a nice shrub or tree of some sort. The leaves remind me a bit of Dog Rose (Rosa canina) but that's just a really wild guess on my part. Hopefully someone will recognize it soon and be able to give you a more exact ID.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!