I hadn't heard of that before
But there might be something to it:
thespliceoflife.wordpress.com/2012/08/17/friday-fun-fact-banana-plants-walk-up-to-40-centimetres-in-a-lifetime/

Looks like it's to do with the way they're cultivated. Interesting though.
( Two Hats 🎩🎩, Tue 24 Feb 2015, 15:52, archived)

Well they're you go

( H.B.Mupps, Tue 24 Feb 2015, 16:01, archived)

*we'll

( Two Hats 🎩🎩, Tue 24 Feb 2015, 16:02, archived)