japanese bananna plant propagation?

I really don't think you can use the fruits unless you are sure that they are from a fertile species (i.e. not sterile, like most of the bananas we eat). Most banana plants die after fruiting, but produce small baby plants from the base. I suggest that you carefully break or cut off the babies when the mother plant has died back and pot them up. Should be fun!

i believe you seperate them slowley parting them so they can adjust but ask urban jungle or look at exotic jungle they will know