Caring for your Christmas cactus requires providing the right conditions to encourage blooming. Here are some tips: Give it bright, indirect light. Keep the soil moist but not soggy. Keep the temperature between 50 and 60 degrees Fahrenheit. Fertilize once a month with a balanced fertilizer. Let it rest in the winter by decreasing watering and keeping the temperature at 50 degrees Fahrenheit. With proper care, it should bloom around late fall or early winter.