A houseplant guide site claims the flowers are "insignificant". I beg to disagree.
The prayer plant is a tropical rainforest native, so it likes water and heat. I have to remember to water it at least every second day, or it starts looking dejected.
I put a couple of stems outside in water for the summer; one of them grew a crop of new leaves and a sturdy root system. The other, in a more protected spot, barely made it. Now, with the beginning of fall, I've brought both inside.