How to Water Siberian iris 'Cambridge'?
Keep soil moderately moist in growth, slightly drier after flowering

Siberian iris 'Cambridge' · Iris 'Cambridge'
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
Keep soil moderately moist in growth, slightly drier after flowering