Welcome! You might have a hardy species of banana, which means the luck is that it will survive your winters pretty well, - Much better than edible bananas! Downside is, it takes years to flower and the fruit are heavily seeded, most don't eat them. They are technically edible though.
Best of luck anyway, and watch out, before you know it you'll start hoarding bananas noone other than us banana-addicts could think would grow out there. Including dozens of edible varieties far tastier than storebought fruits.
