Yup! Every year. Its actually starting to send up its flower spikes now. I have found that it doesnt like to be disturbed. Newly potted clumps flower only occasionaly but if you allow the pot to become really congested (there is hardly any more room for growth in my pot!)
They flower much more frequently and prolificaly. The flower is bright yellow, about 3/4 inch long. If the plant doesnt receive enough light when the stalks start to grow they topple over and you get the flowers sticking up from between your plant pots!!!