Christmas cacti are relatively easy to propagate. You can cut off a small piece of the plant, about two to three inches, and then simply place it in some well-draining soil. Make sure to keep the soil moist but not too wet. Once the piece has rooted, you can repot it and watch it grow! It's important to note that Christmas cacti do best when kept at temperatures between 60 to 70 degrees Fahrenheit, so make sure to provide them with the right environment for optimal growth.