My Thanksgiving cactus (Schlumbergera truncata) had just barely started to open on Thanksgiving day, but it is in full bloom right now. It will have passed its moment of glory by Bloom Day, so I continue to give thanks in the here and now. I've had people tell me their Thanksgiving cactus or Christmas cactus never bloom at the proper season, but that is usually because they have misidentified their plant. The Thanksgiving cactus 'leaf segments' have little points…