Irises that go dormant (Siberian, Spuria and Japanese and bulbs) are best moved during dormancy. Spuria iris can be moved soon after they begin their spring growth, but should be planted immediately and not allowed to dry out.Click to see full answer. Also asked, when can I move bearded irises?Depending on your location, July through September is the time to divide and transplant Bearded Iris. Transplanted Iris should be planted a minimum of six weeks before the first hard frost in your area.Likewise, how do you divide and replant irises? To divide your iris, start by lifting the clump of iris plants out of the ground with a spade or fork. If possible, lift the whole mass out whole, but if you are unable to do this, carefully break the clump into smaller parts and lift these out. Next, brush of as much dirt as possible from the iris rhizomes. Besides, how do you propagate irises? Use a fork to dig up a congested clump of irises. Pull the congested rhizomes apart by hand, or cut them with a knife. Newly-planted rhizomes are vulnerable to wind rock, so it’s a good idea to reduce the leaves by half. Replant healthy rhizomes about 12cm apart with the leaves facing towards the sun. Do bearded irises spread?Iris need at least a half day of sun. In extremely hot climates, some shade is beneficial, but in most climates Iris do best with at least 6 hours a day of full sun. Iris should be planted so the tops of the rhizomes are exposed and the roots are spread out facing downward in the soil.