How to Prune common houseleek?
No pruning required

common houseleek · Sempervivum tectorum
Also known as: bullock's beard; bullock's eye; devil's beard; earwort; fuet; healing blade; homewort; imbroke; Jove's beard; Jupiter's beard; Jupiter's eye; poor Jan's leaf; red-leaved houseleek; roof foil; roof houseleek; sengreen; St Patrick's cabbage; thunder plant; welcome-home-husband-however-drunk-you-be
Grow in moderately fertile well-drained soil in full sun. Protect from excessive winter wet. Suitable for rock garden, scree bed, wall crevice, trough or alpine house
No pruning required