Banana cold hardiness question
I am a first-year grower of bananas. I have several Musa Basjoo and another what I believe to be a Dwarf Cavendish. My question is, is the pseudostem of a banana resistant to frost and freezing weather, or are they just root hardy under these conditions? Second, are the leaves of all bananas frost-sensitive?(I'm assuming they are) I read that Dwarf Cavendish is hardy down to zone 8, but does that mean they'll come back from the roots under these conditions, or will the pseudostem survive and continue to grow again?
Thanks for the help.