How to Prune plantain lily 'Fragrant Dream'?
Remove spent foliage as required and clear up dead foliage when it dies back at the end of the growing season

plantain lily 'Fragrant Dream' · Hosta 'Fragrant Dream'
Grow in fertile, moist but well-drained soil in part or full shade with shelter from cold, dry winds. See hosta cultivation for further information
Remove spent foliage as required and clear up dead foliage when it dies back at the end of the growing season