Banana plants grow new shoots, often called suckers, pups, or ratoons, from the shallow rootstocks or rhizomes, and continue to produce new plants generation after generation for several decades. In about nine months the plants reach their mature height of about 15 to 30 feet. Some varieties will grow to a height of 40 feet. From the stems, that are about 12 inches thick, flower shoots begin to produce bananas.
Here is my 2nd generation of Banana trees. Soon to be moved to their own pots, and moved to the tables for more attention.