Though banana leaf plants are colloquially referred to as “indoor banana trees,” you’re not likely to find a plantain growing on your indoor banana plant. Unlike banana trees, the stalk of banana leaf plants is not made of wooden, pulpy material. Instead, layers of cells make up the leaves and stalk of the plant and eventually die out and return to the earth. However, banana leaf plants are classified as herbaceous perennials, meaning they live for many years.