A Christmas cactus is a beautiful plant that blooms during the holidays, adding a festive touch to any home. To ensure that your Christmas cactus remains healthy and happy, there are a few things to keep in mind: Water your Christmas cactus regularly, but do not overwater it. Keep the soil moist but not soggy. Place your Christmas cactus in a bright, sunny location, but avoid direct sunlight, which can cause the leaves to burn. Use a well-draining potting mix to prevent root rot. Fertilize your Christmas cactus with a high-phosphorus fertilizer once a month during its growing season.