there are two types of 'giant banana' I have bought, but only 8 month in the ground so far. In regular 'wild' conditions they may only give out 1-2 fruit, so in very poor conditions they may not have any fruit at all. These are very rare types of bananas, so this remind you did you buy this kind before? Without enough fertilizer they will not have any fruit at all. I think some local name for these types like 'Gluay Hai Plee" - 'Disappearing fruit banana' or something like that.
กล้วยเทพรส - Gluay Teparod
กล้วยงาช้าง - Gluay Nga Chang
very excited for these to flower, so far they are not so good, I was provided with very small corms, so they are giving a slow start.