Dot - I don't know how to grow this one inside because I'm lucky enough to live in its native range and it does really well outside here.
This species has touchy roots. My greatest success is to grow them in clay pots that are designed for them specifically - tall pots that have no bottom and flare at the rim. I grow them in pure sphagnum and water the heck out them in summer. In the winter the rains do most of the work. Fertilizer is applied a few times in the spring and summer. If you keep them too wet the roots rot, especially if the growing medium sours.
For the growing cycle, they like a long summer with near wet conditions provided the drainage is perfect, with lots of heat. In fall they dry off a lot, and in winter are mostly "dry", but are subject to rains and even snow. The typical diurnal temperature range in summer is between 75-95 F and something like 34-50 F in winter.
Under these conditions they naturally defoliate, but also flower well. If you keep them continuously moist they maintain their leaves for a year or more, but flower poorly. Also, while they do fine in bright shade, the best flowering is done with plants grown in a least a few hours of sun. So, if you want the leaves to remain nice (for example the variegated leaf forms), then water them more in winter.