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

iris 'Elegant Lass' · Iris 'Elegant Lass'
Grow in well-drained, neutral to alkaline soil in full sun but acid soils tolerated if well-drained
Remove any dying foliage in autumn, old flower stems can be cut down after flowering