Remove faded flower heads
This plant is perennial, so after a few years, lift the plant after flowering and divide the roots remove old rhizomes and replant,this will promote new growth and more flowers the following season.
It is easiest to split up existing clumps, than grow from seed. Seed may not grow true to type and take a few years to support a bloom
Prefers well drained neutral to slightly acid conditions in full sun or partial shade
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Sibirica White is a hardy plant.Iris can be used as cut flowers but even if left in the garden iris flowers do not last many days
Expect harvests to start to occur in early summer.