Kahula have no differences as they are always female.
Kahula sing beautiful songs, which have the ability to put Pokémon asleep. But however, they will use a song that will make everything listening faint after a few minutes of singing, which they do when they feel extremely threatened. Their petals are sharp and are used during their dances.
Kahula, like most other Grass types, have a gentle nature in general. They live on beaches, where they enjoy themselves by singing to the sea. Pokémon and people are drawn to their beautiful singing.
Kahula live on beaches where they washed up while they were Shrubsea's. They remain there to thrive on the coastal benefits.
Kahula continues dancing on the reefs they washed up onto as Shrubsea. Competitions exist where people attempt to imitate their hula dances.