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.
Depending on their size, you can cut iris plant stalks back 6 to 8 inches from the ground during the fall, but do not completely remove green stems. The green stems and foliage must stay on the rhizomes to create new buds and sprouts for the next growing season.