How to Water Siberian iris 'Isla Serle'?
Medium moisture in growth, then drier once flowering fully finishes

Siberian iris 'Isla Serle' · Iris 'Isla Serle'
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
Medium moisture in growth, then drier once flowering fully finishes