Why is this cactus drooping? I tied the top so it would stay upright and not droop, but now it’s starting to droop anyway over a period of two months. The plant belonged to my deceased fiancé and I don’t want to lose it!

Picture right side up

  • How much water did you give it? This might be a consequence of too much water and funghi growing on the roots of the plant. Jan 28 '19 at 15:00

Looks like a fairy castle cactus, which is scientifically called Acanthocereus tetragonus. Like @elPolloLoco already commented, the drooping is probably caused by wet roots. This cactus needs a lot of bright light, and very well drained soil. Only water it every time when the soil completely dries up first. Here is more info about the care of this plant.


I think @B540Glenn was close. I think this is actually etiolation caused by insufficient light/water/food at some point in the past. Note that several of the stems have a very narrow section about 4" below the top (right where the bend is). The newer heavier growth can't be supported by this thin stem.

Not sure what your preferred remedy is. It might be better to take a healthy piece(s) and root them and start over. Or you could trim all the stems with narrow parts and the plant will grow new stems and cover up the snipped parts. Or you could leave it alone.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.