"Stone Crop" is a common name for most all sedums. And there are some sedums (which I suspect you may have) that are just reluctant bloomers. Also, yours might be one that just isn't happy enough in zone 9.

Zone 9 is a perfect zone for Sedums....yet many varieties may be reluctant to bloom unless certain conditions are met.Is yours a tall growing variety?If so,make sure it doesn't get too much water during the warm months...it'll tend to bloom better with dry and bright situations.