How to prune brain cactus

Only if rot or dead tissue appears, any season. Cut away only visibly rotted or dead tissue with a sterile blade. Allow the cut surface to callous for several days in a dry, bright spot before returning the plant to its normal position.

Rarely — only when rot or dead tissue is present. Brain Cactus requires no pruning. Its contorted, crested form is a genetic mutation — cutting into it would damage the distinctive wavy ridges permanently. Only remove visibly dead or rotted sections using a sterile blade, and let cut surfaces callous fully before any moisture contact.

Cut away only visibly rotted or dead tissue with a sterile blade. Allow the cut surface to callous for several days in a dry, bright spot before returning the plant to its normal position.