A Washington D.C. organization, WANDA, talks ways to make a global impact: think global act local. A Washington D.C. organization, Think Global Act Local, talks ways to make a global impact. Entrepreneurship
The best time to move iris is six to eight weeks after they bloom. Division and transplanting can be done at the same time. I would try to flag them now with some type of marking system while in bloom so that you know what you are moving later.
The various types of iris will bloom at different times, and bloom time also depends on environmental conditions. A clump of iris generally bloom three to four weeks after planting. Some varieties will re-bloom four to eight weeks after the initial bloom as well. Iris need 15 to 20 weeks of cold to initiate blooming, according to the University of Rhode Island Landscape Horticulture Program website.