Thank you ua hua for confirming it was in fact a flower. As far as grown immersed that I don't know. I bought it from pet co about 6 months ago. It was potted and in a tank all by herself. I'm reading in between the lines here but I'm gathering that this is a plant that can be grown out of water and at one point of its life was? So that makes it more prone to flowering? I dunno.