How to Prune iris 'Ring o' Roses'?
Remove any dying foliage in autumn, old flower stems can be cut down after flowering

iris 'Ring o' Roses' · Iris 'Ring o' Roses'
Grow in acid or neutral soil in sun or partial shade with a cool root run where the soil is moist but well-drained. Mulch in spring
Remove any dying foliage in autumn, old flower stems can be cut down after flowering