Originally Posted by Unregistered

So apparently its a cheaper way or easier way to evolve a Flower Girl?

Neither; in fact quite the opposite. It's a -second- evolution; not an alternative to the first. You have to evolve a unit (then level it to max again) before you can "bloom" it. And no, it isn't in for most girls; right now only the following units can be bloomed: Sakura, Cherry and Evening Primrose.