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.
Pinks (Dianthus) are another perennial that can wait for springtime cutting. In warmer climates, these plants will give you beautiful blooms in spring and fall, and they keep their looks throughout winter. Springtime is the right time to cut back your butterflybush (Buddleja davidii), too.You can cut this shrubby perennial back when you start to see new growth at the base of the plant, which can happen as early as February in some parts of the country.ure, there are a few perennials thatâll weather winter better if they keep their foliage, but if you trim your black-eyed Susans in fall, the garden police wonât show up at your door. If you wait until spring to cut back your daylilies, itâll just be a little more work for you later.