How to prune thelocactus hexaedrophorus

Spring, only when damage or rot is detected. Sterilise a sharp knife with alcohol and cut cleanly below any soft, discoloured, or rotted tissue into firm flesh. Dust the wound with powdered sulphur and allow to callous in a bright, dry spot.

Rarely — only as needed. Thelocactus hexaedrophorus is a solitary globe cactus that requires no pruning whatsoever under normal growing conditions. It does not produce offsets to remove and has no stems to shape. Only intervene if rot or physical damage appears, cutting away affected tissue with a sterilised blade.

Sterilise a sharp knife with alcohol and cut cleanly below any soft, discoloured, or rotted tissue into firm flesh. Dust the wound with powdered sulphur and allow to callous in a bright, dry spot.