Hello, I've had a rain forrest cactus (I think, please tell me if I'm wrong) for about 6 months, it was growing really well but now I've noticed parts closest to the soil are turning black. This is happening really quickly, does anyone know what this problem is and how I can rectify it? Thanks in advance!

I would be very worried about the black stems. Is it mushy or slimy inside? I am afraid the green parts are just surviving with no input from the roots.

Hope someone else comes along who knows.

maybe you should post this in the cactus and succulents forum not the houseplants. My guess is root rot.

Looks like root rot to me. Are the black stems soft & squishy?
Better take some cuttings from the green parts before the entire plant is gone.
This probably is a Rhipsalis or epiphyllum, which are air plants and should be grow in a well drained potting mix.

Its an epiphytic cactus of some sort so soil is not its friend. I suspect its rotting because too much moisture is being held against the roots. Epiphytic plants need fast draining, fast drying soil. Orchid bark with lots of filler to make big air spaces.

DaisyI said:Its an epiphytic cactus of some sort so soil is not its friend. I suspect its rotting because too much moisture is being held against the roots. Epiphytic plants need fast draining, fast drying soil. Orchid bark with lots of filler to make big air spaces.

Can a plant like that be saved by useing cuttings??

Yes, you should be able to do that. Success will depend upon how much energy reserve the cutting has left. I have done it with mature whole segments, like starting Holiday cactus.

DaisyI said:Yes, you should be able to do that. Success will depend upon how much energy reserve the cutting has left. I have done it with mature whole segments, like starting Holiday cactus.

That's what I was thinking. Looks like a holiday cactus type of plant