Christmas Cactus are getting ready to put on their beautiful displays of colorful blooms!
Christmas cactus is a member of the leaf cacti family, and there are really three main types ... not all of them being "christmas cactus".
The Thanksgiving cactus (Schlumbergera truncata), the Christmas cactus (Schlumbergera bridgesii), and the Easter cactus (Rhipsalidopsis gaetneri) all look alike, but their flowers are slightly different, and their bloom times are completely different. The thanksgiving blooms in fall, the Christmas is near Christmas time and the Easter is in late spring.
Shown below is my Easter Cactus.
If you have one but can't get it to bloom at all, you may want to try putting it in the dark for a couple of weeks, or keep it cool (55-60 F) for about 4 weeks .... the darkness is easier to control. They all require good indirect sunlight and do not let it dry out, they are not "true" cactus.