How big will dendrobium get?

[dimshane]

Hello all,

I heard that some dendrobiums get very large. However I am wondering if this one could be a miniature? I've had it for one year only. I bought it on discount at a garden center. No tags, no instructions. It's in full bloom now and I'm looking to repot it once the flowers fade. It has quickly taken over the small clay pot by spreading. Knowing how big it could get would help me determine the right size or set up.

Any ideas are appreciated.