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.
Growing Tips. 1  Many gardeners do not cut back perennial flower seed heads in the fall, but wait until early spring before the new foliage appears. 2  Gaillardia is excellent for the middle of the border, in the cottage garden and for naturalizing in a wildflower meadow. 3  Gaillardia makes a fine cut flower.