This is what they say to do at the Encanto farm in San diago

"The plant appears to be more pH sensitive than most. Prefers a soil that is slightly more on the acidic side. The offshoots of this plant may become all green or white if the pH changes, therefore making it really hard to get new plants. Extremely Rare. I grow mine in a large pot in pure peat moss with a little perlite added for drainage. You could use sand, pumice or something else for drainage, too. I`ve had it several months now and it couldn`t be happier. I`ve lost count on how many leaves it has produced. I feed it Osomocote time-release acid fertilizer. It seems to like morning sun and afternoon shade. The cream part of the leaves "burn" no matter what you do. ... Needs acid pH (5.5-6.5) for best growth. ... There was a mention that the Ae Ae is considered a plantain or cooking banana. It is a cooking banana, but not a plantain. Bananas and plantains are not the same. Similar, but not the same. It needs an acid soil for the leaves to be varigated, otherwise they will just become green. The leaves show up really well in moonlight and make a nice exotic touch to a moongarden or any garden at night as well as looking interesting by day. ... I grow Ae Ae in full sun and in an alkeline soil. I harvest 2 or 3 bunches a year and a bunch has 7 or more hands of very large bananas."

Heres is the web address to the page with the article and the nice pics http://webebananas.com/bvar-A-B.html