First you better ask permission before you take a pup, some people get real angry if you mess with there plants.Some bananas can take many years before they will fruit & some never fruit.

Most banana take atleast a year or 2 to bloom, then they die!
Some take years, some have never been seen, but they all bloom, 99% make fruit after, but it's often inedible!

What you need is a pup!
Naners grow from a corm, it'll be down several inches in the soil, the pups come from there, and emerge near the base of the plant, some grow runners several feet away!
Your pup needs to have corm attached to it!
I'd ask the landlords about it, if it's their plants they probably won't mind sharing!

Hey all!!! I was collecting banana leaves off of the trees to feed to my caterpillar I found which according to the internet loves banana leaves.

I tugged on a small leaf and POP! Out came a healthy banana pup!!! It has 3 banana leaves and a root looking thing with some long scraggly roots attached to it.

So now that I have a banana pup ..... how do I care for it properly? :)

Put it in a pot with some well draining soil or compost preferably, find a warm sunny spot and keep it moist but not wet. Keep it there till it puts out a new leaf or 2 ,,, at that point it is ready for full sun in ground or in a pot.