Rooting Christmas cactus in soil is generally better than rooting in water. Soil provides better support and stability for the roots and allows for proper drainage, reducing the risk of root rot. It is recommended to use a well-draining potting soil specifically formulated for cacti and succulents. This type of soil provides the right balance of moisture retention and drainage for optimal root growth. When rooting in soil, make sure the potting mix is slightly moist, but not overly wet, to avoid waterlogged conditions. Gently place the Christmas cactus cutting in the soil and press it down to ensure good contact with the soil. Keep the soil lightly moist and place the pot in a warm, well-lit area. Roots should begin to form within a few weeks, and once the roots are established, you can gradually transition the plant to its desired location.