The Iris was first cultivated commercially in Florence Italy during the middle ages. Florence remains a center for orris root production and perfume making. Pests and disease Usually free of pests and disease. Cultivation Plant rhizomes in early spring leaving half of each rhizome above the surface to prevent rot. It usually takes two to three years for the plant to reach maturity.
Plants become wider as underground rhizomes multiply.
Propagation method Division in late spring or early autumn. Harvesting Harvest roots at maturity. Herbal uses Decorative, culinary, medicinal. Use for drying. Use for fragrance and pot-pourris.