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.
Although irises primarily require pruning only after flowering and in fall, dead or diseased leaves can be cut out any time of year. Trim back these leaves to their bases to improve the plants' appearance and to prevent the spread of pests and diseases.