Cutting and Dividing Iris Clumps With a sharp knife cut into each rhizome, saving the stout white roots and removing the old spent tip of the mother rhizome. The solid young rhizomes on the outside edge of the clump are the best ones to keep. ...
Examples of perennials: black-eyed susans, purple coneflower, sedum, peony, bearded iris, daylily, salvia, coreopsis, hosta, phlox, false indigo (Baptisia), yarrow, aster, Russian sage, and bee balm. Examples of annuals: zinnia, petunia, impatiens, marigold and sunflower. See the easiest p...