Irises: Can Iris tubers be moved in spring?, 0 by Wandasflowers

Wandasflowers wrote:
It depends on the variety of iris--the cheap historics seem to multiply more quickly. The expensive new ones seem to multiply slower--figures. I often remove extra rhizomes around the edge of the clump or big dead mother roots from the centers of the clumps. The dwarfs multiply extremely fast, but don't seem to mind the crowding.

If I look into the clump and it is so crowded that I see no dirt, I remove rhizomes. This time of the year is a great time to look, my iris are just starting to green up.