Well, to make your Christmas cactus bloom, you'll need to provide it with a few key conditions. First, it needs bright, indirect sunlight, so make sure it's placed near a window but not in direct sunlight. It also needs to be kept in a cool area, with temperatures between 60 and 70 degrees Fahrenheit. You'll also want to water it when the soil feels dry to the touch, but be careful not to overwater it. Finally, give it a balanced fertilizer every few weeks during the growing season, which is typically spring and summer.