What is happening to my queen of the night? I repotted, cleaned the roots really good and changed to a new cactus soil but still browning and looks like its dying. I need some advice please.
I know almost nothing about diseases of cacti and haven't grown the Queen of the Night. But I suggest you to search and read earlier posts on that topic here. Like: Brown crisp patches on Epiphyllum oxypetalum leaf My Queen of Night is dying, how can I save it? Please help! For helping any experts you should maybe be more specific about how did you care your plant, how long did you have it (before these symptoms appeared) etc.
I don't think it has to do with the roots, this looks like a fungal infection. I would cut off all diseased parts and perhaps take a spare cutting and place it at a safe distance from the original plant.