unknown plant

I recently purchased a plant from a local nursery that came with no description or care instructions. I asked the gentleman with plant knowledge what this plant was. He stated it was native to New York state and it was called a mugwort. However, open researching the type of leaves this plant presents with, it is definitely not a mugwort. The plant has purplish red stalks and main vein into large green leaves. The leaves are large spade shaped with small serated edges. Can anyone give me an idea what this plant may be and what type of conditions are best for it. Thanks