Onc. ornithorhychum

[denvervet]

I am not sure this Oncidium was spelled correctly on the tag but that's what it says. I have had this orchid two years and not a bloom. When does it normally bloom? It is in medium bark, gets bright to medium light all day, is watered 2 X a week since it dries out so quickly and I fertilize 2 X a month with miracle grow full strength. Its growing but what could I be doing wrong? Thanks