first off i wanna say the answer that im giving is based on what the individual growers have suggested. i thought it would be good to post this thread to illustrate that there is a lot of confusion in the backyard banana business.
dont know about anyone else but,the more cultivars i seem to aquire the more confused i get.
well from what the growers have told me the gran nain is on left (the red stalk banana with black spots). on the right (rust/ green stalk with black spots) is supposed to be the dwarf cavendish.
from what i have read the dwarf cavendish is supposed to have persistant male flowers and bracts that remain and fill the space between to the bunch and the terminal bud as the fruit matures..... that should be a way to tell them apart.
i could have had one of the red stalk banana cultivar (called gran nain) flower by now but i left it outside last year. the main p stem died.. the corm is huge still.. i cut off all the suckers but one or two.