Ah, missing key information from the plant tag... Yep, further research certainly shows that my cultivar 'Jade Butterfly' is indeed a dwarf - grows slowly to about 12'. Shoot. I put this in our front field hoping it would eventually be a nice stately tree. Guess not. Now wondering if I should try to move it, although that seems a bit dicey. On the plus side, it is a male so doesn't have smelly parts.