It was a nice tall plant outside. I didn't measure it, but later ( as a submerged houseplant inside) it was measured at 6 1/2 ft tall for the tallest stalks.
By then end of 8 months inside it is needing to go back out. I battled scale all winter( which it came with when I bought it)- I think I might have finally won.
I also added a shorter variety- umbrella type- to the show. We had a lot of wind yesterday. It broke half the tall papyrus stalks. It didn't cause any damage to the shorter umbrella type.