Q.Moon Cactus Rotting
Please help me. I am emailing for help to save my moon cactus – it is rotting from the top and I have absolutely no idea how to save it. Do you have any suggestions? I really want to save it.
Please let me know. Thank you for your time. I have uploaded a photo as well.
Certified GKH Gardening Expert
Your cactus may have been overwatered and has a type of root rot or fungal issue.
Repot the cactus in fresh cactus soil and do not water for two or three weeks. The brown part at the top can be cut out with a sharp, clean knife. Allow the cut to stay dry while it is healing. (Do not water from top.) Since winter is coming on, water only sporadically, when the top 3 inches of soil is dry. A mature moon plant (over a year old) does not need to be watered at all during the winter.