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 the cultivar, irises typically bloom in April through June, but some may flower again in late summer or early fall. After flowers fade, you can trim iris plants to prevent new seeds from forming -- but do not remove green stems from the ground.