Leaves will eventually be about 12" long so it get to be quite a big plant with 3' flower spikes.
Hope this helps some.
Do you mean that the leaves can attain 12", or that they start blooming at 12"??? I just got one in september, supposed to be blooming size, and the largest leaf is 5".
__________________ Camille
Completely orchid obsessed and loving every minute of it....