Caring for your Christmas cactus is not too difficult. You should water it when the top inch of the soil is dry. Make sure to avoid overwatering it, as this can cause the roots to rot. It should also be placed in a bright, sunny location, but not in direct sunlight. You can feed it with a balanced fertilizer during the spring and summer months, but not during the winter. Lastly, you should repot the plant every two years to provide it with fresh soil and enough room to grow.