A small indoor flowerpot is a very different environment.
Putting blended fruit scraps into houseplant soil can encourage:
Fungus gnats
Mold
Unpleasant odors
Fermentation
Other insects
For houseplants, a properly formulated houseplant fertilizer is much easier to control.
If you want to recycle banana peels for your indoor plants, composting them first and later using properly finished compost where appropriate is generally a cleaner approach.
Quick note:
What works reasonably well in an outdoor garden isn’t automatically a good idea inside a flowerpot.
Will Banana Peels Make Flowers Bloom More?
