Nance, I would grow those as you would Catasetum. When they're not in an active growth stage, water just enough to keep the PBs from shriveling, and then increase water once new growth starts to show up. Seems that Mike and Prem both grow these though; maybe one of them will see this post, or you could PM. I don't think the plants should be allowed to get absolutely bone dry for any length of time, but one of those two guys would know more.