How to Prune blue puya?
No pruning required

blue puya · Puya coerulea
Under glass grow in terrestrial bromeliad compost in full light. Water moderately when in active growth in mid-spring to late summer and apply a low nitrogen fertiliser every 6-8 weeks. Plants will tolerate temperatures below 0°C for brief periods if acclimatised to cool winter conditions. In warm, sheltered gardens grow plants outdoors in a sunny spot in sharply draining soil and protect from winter wet
No pruning required