How to Prune Siberian flag?
Remove any dying foliage in autumn, old flower stems can be cut down after flowering
Siberian flag · Iris sibirica
Also known as: Siberian iris
Grow in any good garden soil that is preferably moist but not waterlogged. In drier soils, dig in well-rotted organic matter before planting then apply as a mulch each spring
Remove any dying foliage in autumn, old flower stems can be cut down after flowering