How to Prune Iris pseudacorus 'Alba'?
Remove any dying foliage in autumn, old flower stems can be cut down after flowering

Iris pseudacorus 'Alba' · Iris pseudacorus 'Alba'
Grow in wet, deep, acid, humus-rich soil in full sun or partial shade. It thrives at the margins of large ponds or streams. Has the potential to become a nuisance if not managed well so plant with care
Remove any dying foliage in autumn, old flower stems can be cut down after flowering