Help for Christmas cactus
Should I keep a Christmas Cactus if its "leaves" have turned dark and purplish? My husband likes to help and continually waters this plant, and even put it in the hot sun outside for a few weeks. Can I save this plant?
Your plant may be suffering from root rot.
Here is a link with directions to dry out the roots.
With some work and if the plant is not to far gone it can be saved.