How to Propagate iris 'Carnaby'?
Propagate by division of rhizomes after flowering, from midsummer to late summer; for more advice, see dividing irises

iris 'Carnaby' · Iris 'Carnaby'
Plant in full sun in well-drained soil, and with the top surfaces of the rhizomes exposed so that they bake in summer sun, which encourages flowering. See also bearded iris cultivation
Propagate by division of rhizomes after flowering, from midsummer to late summer; for more advice, see dividing irises