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.
Once an iris is done blooming, it's a good idea to cut it back to within a few inches of the bulb. That's the green spiky part and the stem that held the flower both! I live in the north, and do mine in the fall, not spring. I use a large pair of scissors or garden shears when I do mine. hopethathelps Â· 1 decade ago.