My banana also grew like never before, I'm going to hate having to bring her in soon and let her go dormant.
When it was given to me as a gift I was told it was a Zebrina. She is now 4 years old, I bring her in before the temp goes down to 40 at night I leave her on the screened in porch for a couple of weeks, I will start with holding water.I put her in the corner of my living room so she still will get some sun, she looks like she's half dead come spring, I'll post a picture of her this past spring when I put her back out.