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

iris 'Attention Please' · Iris 'Attention Please'
Grow in well-drained, fertile, neutral to slightly alkaline loam in full sun, with upper part of rhizomes exposed. See bearded iris cultivation
Remove any dying foliage in autumn, old flower stems can be cut down after flowering