Katy,
I also agree with experienced forum member Pitangadiego says!.....
Looks like Hua Moa ‘Nana (Popoulu AAB) variety!....Not a Cavendish ‘Nana variety at all!....It’s called Hawaiian Plantain!.....It’s one of the most consume ‘Nana varieties in South Florida!...You can find them in every supermarket!....Hua Moa grows approx. 10 ft. to 14 ft. tall at flowering/blooming!.....Needs about 2 to 3 months depending on weather, to be ready!....
Hopefully it helps!....


