Native to Brazil, flowers can last 7-8 weeks. Unlike other cactus, Christmas Cactus should not dry out between waterings. This is even more important when buds set and bloom. The Christmas Cactus does not like heat, but it thrives in a humid atmosphere. It should not be placed in a spot where the temperature constantly changes, such as by air vents, heaters, or doors that open and close. The ideal time to fertilize is between the months of April and September when the cactus is not blooming. Christmas Cactus bloom them naturally at the holiday season, Thanksgiving to Christmas.