gngrhill - if I can offer an opinion, L. discolor grows best if treated more like an African violet. Mine was started from stem cuttings, I took a large plastic pot, filled 2/3 with bark mixed with Styrofoam chunks. The remaining 1/3 is filled with African violet potting mix. Place the lower ends of cuttings in soil & anchor. Keep moist, light should be lower than or equal to Phalaenopsis. Leaves fade & wither if they get too much light.
Thanks, Orchid Whisperer, Maybe after it blooms I will try a repot. Both you and Silken recommend a more soil type medium, so I will try that. I don't think I can take any stem cuttings as there are only 2 stems at present, but I do have a couple of very tiny new growths coming up, so when (if) they develop, I can try cutting the big stem and try to start a new one.