Does anyone know what this is
Looking at the broad leaves plant in the middle of the picture,between the butterfly bush and the sumac...Found this yesterday. It is about 10 feet tall. It is growing on a hill made entirely of rock with a thin covering of soil. The base of the stem is woody. Leaves are about 18" wide at the widest point. No branches, but from my vantage point, seems to have a second stem coming off the first at the very base of the plant. Wondering if I should get rid of it before it gets any bigger.