This is the time of year the tall bearded iris become available for sale. Tall bearded Iris are sold as individual roots, called rhizomes which are found in the bulb section.
This is also the time to divide bearded iris. Over time, iris become crowded and they stop blooming, so it’s important to dig and divide iris every so often in order to reinvigorate the plant. Get rid of rhizomes that are soft, mushy or have holes in them. Holes indicate the presence of iris borers, so you will want to treat the rhizomes you choose to keep, with a garden dust such as Eight. You are now ready to plant your iris, following the same guidelines outlined earlier in this article. Your iris will establish themselves through the fall and early winter and be ready to bloom for you next spring and in some cases, next fall.