The genus Iris includes over 200 species of plants widely grown in U.S. Department of Agriculture plant hardiness zones 3 to 10. Prized for their ornate, richly colored flowers and swordlike foliage, most cultivated varieties of iris are grown from rhizome divisions that faithfully reproduce the favorable flowering characteristics of the plant. However, non-hybrid species, such as the Douglas iris (I. douglasiana), will also grow from seeds. The seeds germinate reliably in two to three months if sown in a fast-draining, mildly acidic potting mix and germination is greatly enhanced by soaking the seeds in water for several days prior to sowing
approx. 5 seeds