Oncidium (Wilsonara) Lisa Devos 'Burgundy' won't bloom

[JScott]

I got this plant a couple years ago, and I wasn't sure if I could grow it or not as it has a lot of Odontoglossum in it, and I can't maintain cool temperatures. In the winter, I kept it right by the window where it stays cooler. I put it outside in the spring and fall when the days are just warm and the nights are cool, and the rest of the time I have it in a sunny window in the house, wich we keep at about 68 degrees, although it gets warmer than that by the window when the sun is shining on it during the day.

Since I bought it, it has put on two new plump pseudobulbs, each bigger than the last. The leaves look great and you can see through the clear pot that it has good roots. I know it gets enough light because it has a slight purple tinge to it, but the damn thing just won't bloom. I fertilize it with a time release fertilizer, and never let it dry out completely. It is planted in small bark.

Anybody else growing and blooming this plant? What am I missing? My other Oncidiums bloom every time a new bulb matures, but not this one. The new bulb matures, and it just starts another new growth. Could I be keeping it too cool? Would it appreciate staying outside all summer (although in Texas, summers are hot).

I love this plant because it is so healthy and grows so well, and I just like the fat little egg shaped pseudobulbs, I think they're mad cute, but I would rather have blooms. Anybody have any thoughts?