How to Prune Iris 'Lord Warden'?
Remove spent flower stems in summer, and any dying foliage in autumn

Iris 'Lord Warden' · Iris 'Lord Warden'
Thrives in a sunny position, in neutral to slightly acid soil with good drainage. Plant rhizomes just above soil level, as sun on the rhizomes encourages flowering. See bearded iris cultivation
Remove spent flower stems in summer, and any dying foliage in autumn