How to Prune achimenantha 'Inferno'?
No pruning required

achimenantha 'Inferno' · ×Achimenantha 'Inferno'
Grow under glass in bright filtered light and moderate humidity. Water sparingly in spring, moderately in summer with quarter strength liquid feed, then reduce after flowering until growth dies back. Store the rhizomes in dry, frost-free conditions
No pruning required