Dear Jim, This plant has a reputation for sometimes skipping a year (or more). I think we talked about this in the past and this was true for some and not for others which is the response you are getting this time as well. You could check the archives. I think mine bloomed more reliably with hotter summers than they do here where they sometimes skip more than a year. And I expect that my trees are providing too much shade as well. In our climate they have a brief dormancy in late summer. Last year they bloomed for the first time in awhile. So if it is too hot for them in Taiwan, it may be too cool for them in coastal Northern California and just right for them in Southern California and New York. Mary Sue