This is a volunteer. Not sure what it is. Can you tell me? I would pull it if it's a weed but not sure. In Omaha, NE in the mostly sun partial shade. I had two pop up one is by the driveway the other close to the house. Just regular dirt with mulch. The leaves remind me of carrot leaves but a little bigger.
Looks like Hemlock
Give it a chance and it'll shoot up to eight feet high, flower, then fall over and die back.