When to Transplant Iris in Zone 5?

The best time to plant and transplant rhizomatous iris is late July through September. Iris loves the heat and drier weather of summer and the summer dividing will reduce the incidence of bacterial soft rot. Most rhizomatous iris should be divided every three to five years.

When can I transplant irises?

Bearded Iris are ideally divided late summer to autumn, once they have finished their flowering. Moving them at other times is ok, but it will disrupt their flowering. 1. Simply dig under the clump with a fork or spade, ensuring you don't run through the rhizomes as you do.

Can you dig up irises and replant them?

Transplanting iris successfully requires you to cut or break the small rhizomes away from the larger mother. Discard the mother; do not compost due to various iris pests and diseases that could survive in the rhizome. Trim the leaves back to 8 inches before transplanting iris.