How to prune owl eyes cactus

Any time, as needed. Remove dead or rotted offsets or sections with a sterile, sharp blade at the base of the affected tissue. Allow cut surfaces to dry and callous in a shaded, well-ventilated spot before watering.

Rarely — only when damage or rot is present. Owl Eyes Cactus needs no routine pruning. This slow-growing, clustering Mammillaria maintains its rounded shape naturally. Only intervene to remove shriveled, dead, or rot-affected growth. Use a sterile blade and allow any cut surface to callous for several days before resuming normal care.

Remove dead or rotted offsets or sections with a sterile, sharp blade at the base of the affected tissue. Allow cut surfaces to dry and callous in a shaded, well-ventilated spot before watering.