How to Prune plantain lily 'Lakeside Scamp'?
Deadhead promptly to encourage more flowers. Remove spent foliage as required and clear up dead foliage when it dies back at the end of the growing season

plantain lily 'Lakeside Scamp' · Hosta 'Lakeside Scamp'
Grow in fertile, moist but well-drained soil in part shade with shelter from cold, dry winds. See hosta cultivation
Deadhead promptly to encourage more flowers. Remove spent foliage as required and clear up dead foliage when it dies back at the end of the growing season