This poor guy has had a rough time- I inherited him with my home, and he was in a pot with very little dirt, and then pot-less for almost a year with his roots exposed.
I finally got him a pot, and found the time to transplant him after I noticed that he was growing a beautiful green at the top, in spite of all the harsh treatment! I had been watering him once in awhile and that was enough to spur the growth! I can't wait to see how he does now that he has a proper home! I've no idea what type of cactus this is or what to expect in the way of blooms but I am glad I finally took the time to get him in a pot.