How to Prune plantain lily 'Raspberry Sorbet'?
No pruning required

plantain lily 'Raspberry Sorbet' · Hosta 'Raspberry Sorbet'
Grow in a shady spot in fertile soil that does not dry out, with shelter from cold, drying winds. Mulch annually in spring. Hostas in the ground may need watering during dry spells. See hosta cultivation for more detailed advice
No pruning required