It draws out and controls the hidden power of flowers. The flower Flabébé holds is most likely part of its body.
When it finds a flower it likes, it dwells on that flower its whole life long. It floats in the wind’s embrace with an untroubled heart.
It’s not safe without the power of a flower, but it will keep traveling around until it finds one with the color and shape it wants.
Flabébé wears a crown made from pollen it’s collected from its flower. The crown has hidden healing properties.
— Pokédex entries (via PokeAPI)