Mullein is the foodplant of the mullein moth caterpillar, Cucullia verbasci which causes unsightly holes in the otherwise ...

Common mullein grows aggressively ... Within the first year, you'll notice a large circular arrangement of thick, fuzzy ...

They grow between 5 and 10 feet tall. So the mullein plant is pretty easy to identify. The leaves are kind of wooly or fuzzy. Also, you kind of can't miss the spike and then the yellow flowers ...