As Banana and Platano stalks grow, suckers, or chutes grow out of the base of the plant.
It is not uncommon to get 6 or 8 of these coming out through the rainy season. Simply dig down next to the chute, put a shovel between the adult and the juvenile and cut it off in the roots. Dig a new hole and plant the baby. You probably could triple your orchard every year if you wanted.