How to Prune iris 'Benton Bluejohn'?
Remove any dying foliage in autumn, old flower stems can be cut down after flowering
iris 'Benton Bluejohn' · Iris 'Benton Bluejohn'
Grow in well-drained, fertile, neutral to slightly alkaline loam in full sun, with upper part of rhizomes exposed at soil level and not overshadowed, rotate every 5-6 years. See bearded iris cultivation
Remove any dying foliage in autumn, old flower stems can be cut down after flowering