when should i put my christmas cactus in the dark

To get your Christmas cactus to bloom, you need to put it in the dark for 14-16 hours per day. I recommend starting this process about 4-6 weeks before Christmas. Place your plant in a dark, cool room with temperatures between 60-65 degrees F, and keep it away from any bright light. After the required time in the dark, you can move your plant back into the normal light and it should start to bloom.