That really sucks, I am an outdoor plant person anyway, my house doesn't seem to get as much natural lighting as i had planned, I also have two Bengal cats that destroy any form of plant or seedlings that i bring indoors.
One thing was, I wasn't sure about the legality of growing a banana plant in my state, but it appears my grandmother got the plant around 2 years before all the laws and restrictions came into effect in the other states.
While researching, most other states in Australia have restrictions on growing banana plants, you can only have up to 10 plants on a certificate, If you want to moving them from one location to another you need permits and plant health certificates, it seems they are highly controlled due to primary banana industry's and disease control.
But i could not find any information in regards to my state on the DPI website. So after contacting them, i found out there is no restrictions in my state, as there is no established banana industry due to the climate. so there is no restrictions on how many plants i can grow and i am able to freely move them around.
However If i import a banana plant from another state ill need a soil health certificate to confirm there is no fire ants, other than that its all good. I am thinking i might look into getting a Blue Java, but id have to import it because i haven't seen a nursery sell banana plants.
I do how ever have a question, I have a plant that took a bit to much heat than i was expecting the other week as we are in mid summer, I put it in a spot where i thought it would get the morning sun and afternoon shade, turns out there was no afternoon shade. It does not look to good at this stage, but do you know how long it might take it to bounce back?