Relations and functions | Functions and their graphs | Algebra II | Khan Academy
I'm sure I read that leaves should be left alone for six weeks to strengthen the iris and create more offsets. They can be cut back, lifted and moved after six weeks. So if you can pot up the annuals and wait the six weeks, then move enough irises to plant your annuals at that time. Thanks Good ideas. Think I will wait 8 weeks, then lift some Iris and move thus freeing up space for annuals.
Irises can remain in bloom for up to a month. The sword-shaped leaves and tall graceful flowers of an iris (Iris spp.) plant provide an anchor in garden beds and borders. These long-lived perennials grow in U.S. Department of Agriculture plant hardiness zones 4 through 11, depending on the specific variety.