I am looking to identify this plant. It has filled in a large area and seems to have a spreading nature (about 25 or 30 feet by 15 feet). It is on the Northeastern side of my home with Sun/dappled shade in the morning and shade from the building for much of the afternoon. It ranges in height from 8 feet to 3 feet (much of it is 3-4 feet tall).

We inherited this plant when we purchased our home. We are considering moving some of this to.from a new hedge with burning bushes (in another shady area).

Your input is greatly appreciated!