How to prune iris 'immortality'

Deadhead after each flowering flush; fan trim after the autumn rebloom, or in early spring. Cut spent flower stalks to the base after all buds have opened. Trim the leaf fans to roughly one-third their height at an angle after the second flush ends, removing any yellowed or spotted leaves at the same time.

Deadhead after each flowering flush (twice per season); trim fans once annually. Iris 'Immortality' is a reblooming tall bearded iris — it flowers in late spring and again in late summer or autumn. Deadhead spent stalks promptly after the first flush to encourage rebloom. Give foliage fans a light trim in late summer once reblooming is finished. Remove any brown or diseased leaves as they appear.

Cut spent flower stalks to the base after all buds have opened. Trim the leaf fans to roughly one-third their height at an angle after the second flush ends, removing any yellowed or spotted leaves at the same time.