Why is my banana plant losing its bananas or tubers?
Banana plants are known for their unique banana-shaped tubers, so it can be disappointing if yours start to lose them. Most likely, the banana plant is not getting enough nutrients, so it has started to consume its stored energy in the tubers in order to survive. Feed your banana plant a root tab or two every 3 months (or as needed) to ensure it gets enough to eat.
This phenomenon can also happen with other bulb plants (like the dwarf aquarium lily or tiger lotus) where the bulb will start to soften and disintegrate as it's being consumed. Again, make sure to feed your plants enough fertilizer to sustain their rapid growth.