Can you tell me what type of plant this is? Can humans eat berries? Plant has...
This is a very common weed in Maryland called Pokeweed. Don't eat the berries or any plant parts as they are poisonous to humans. Birds love them however, and that is likely how it came to your yard. The are perennials and will return each year unless they and their increasingly thick taproot is either dug out or treated with an herbicide containing glyphosate.