Mine is in bark and perlite. The roots look like they are trying to escape right now, and I am contemplating a repot, but don't want to disturb it, maybe when it finishes blooming.
Jenny no squirrels allowed here, last summer my cats killed a full grown one (heck of a fight). Most times they sit on the power lines and curse at the cats now. They never come into the yard though
Stupid cats will let the birds eat their food, go figure.