How to Prune Cleistocactus colademononis?
No pruning required

Cleistocactus colademononis · Cleistocactus colademononis
Under glass, grow in standard cactus compost in full light and with low humidity. In the growing season water moderately and apply a dilute low-nitrogen fertiliser monthly. Keep completely dry from mid-autumn to spring. See houseplant cacti and succulent cultivation for further information
No pruning required