Some individuals after a long period of succession, there may be flowering, which may be the cause of adaptation to the environment and hormone accumulation, my Dendrobium has this phenomenon; some are due to the re-differentiation process of the differentiation of flower buds, such as Gerbera daisy bud induction process may be differentiated again to flower buds or the original individual young tissues continue to develop in the hormone is lower following the opening of the (incomplete).