What is going on with the wilted leaves of thecrab cactus (Disocactus acknowledgei)? Why are the leaves of thecrab cactus wilted? (Note: "crab cactus" is translated as "Disocactus acknowledgei" based on a common scientific name for the plant, assuming it is being referred to. The specific species or variety may vary, and a more accurate name may be needed for precise communication.)
What should be done if the cactus has a rotten core? How to deal with the rotting problem of a cactus?
How to propagate small cacti from a large cactus: Detailed explanation of the propagation techniques for cacti.