Banana (trees?) hang over the fence in my sister’s backyard in Los Angeles. While they are as big as some small trees, bananas are really just a very large herbaceous flowering plant.
Each stalk that arises from an underground corm produces one flowering stem that develop into the fingers of bananas we later purchase at the grocery store. When that stalk has ripened its fruit, it withers and falls, and a new “baby banana” shoot starts to grow up from the corm. So banana plants are really herbaceous perennials.
Bananas originated in the Indomalayan-Australian region of the world. Varieities were selected that could develop fruits without seeds and without fertilization of the flowers for cultivation, so modern bananas develop directly from the first, female-only flowers on the flower stalk (i.e., parthenocarpic development).
Plant breeders have so successfully messed with the sex life of the banana plant, there is no purpose for these sterile or male-only flowers, and they are usually removed. Their slimy, sticky residues are a nuisance to clean up anyway.
The bananas in the Los Angeles backyards seem to be an untapped resource — there are no monkeys to harvest them, and the squirrels and birds seem to ignore them.