Grit can be added to the compost to improve drainage. Drainage is important because Christmas cactus do not like wet roots which can lead to rot.
When repotting, choose a container only slightly larger because these plants like to be snug.
Unlike other flowering plants, the Christmas cactus requires very little pruning, making it an easy houseplant.
If left to grow uncontrollably, the plant can take on a leggy appearance. Older plants may also become overcrowded, which means they need to be trimmed.