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

iris 'Snowy Owl' · Iris 'Snowy Owl'
Grow in well-drained, fertile, neutral to slightly acid loam in full sun. See bearded iris cultivation
Remove any dying foliage in autumn, old flower stems can be cut down after flowering