Thin Iris foliage, free-flowering herbaceous perennial up to 1.2m tall, with narrow
grassy foliage and branched stems bearing up to 5 violet-blue flowers 6-7cm wide
in early summer, the falls veined purple on white at the base.Grow in any good garden
soil that is preferably moist but not waterlogged. In drier soils, dig in well-rotted
organic matter before planting, where it will produce an abundance of bright flowers
from late spring / early summer. Trim fading foliage in Autumn.