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

plantain lily 'Striptease' · Hosta 'Striptease'
Grow in fertile, moist but well-drained soil with shelter from cold, dry winds. Best in slightly acid or neutral soils; it will grow in alkaline soils if enriched but shallow, chalky soils can cause leaves to yellow. Partial shade is best but it can tolerate some sun if the soil is kept moist. Mulch in spring. See hosta cultivation
Remove spent foliage as required and clear up dead foliage when it dies back at the end of the growing season