How to prune bishop's cap cactus

Only if rot removal is needed — no scheduled pruning. If rot occurs, cut cleanly into dry, healthy tissue with a sterilised blade. Let the wound callous for several days in a dry, bright spot before resuming normal care.

Never under normal conditions. Bishop's cap cactus (Astrophytum myriostigma) requires no pruning. It grows as a solitary, ribbed column or sphere and does not produce offsets or sprawling growth. Leave the plant entirely unpruned. The only exception is removing rotted tissue — cut back to clean, dry flesh with a sterilised knife and allow to callous.

If rot occurs, cut cleanly into dry, healthy tissue with a sterilised blade. Let the wound callous for several days in a dry, bright spot before resuming normal care.