I used to cut spikes down to just above a node, because I'd read in several sources that phals can rebloom from the same spike if you cut them that way. The owner of Seagrove Orchids gave a talk at a recent TOS meeting, and she called that phal abuse, half jokingly. She recommended cutting the spike down at the base once it was finished blooming, for the plant's overall health . I've also read to put a little cinnamon on the cut part, to insure against bacteria or fungus entering. Bear in mind, I'm a newbie here, and in the learning stages. More experienced growers may advise you better.
