Tool time
Transplant now
Fertilizer? Not yet!
Bag the bagworms
Pre-emptive strike on weeds
Slug ‘em
Clip and trim
Armchair gardening
A final thought
Answer: Hi Janet, Late winter/early spring is a great time to do this as the plants have died back to the ground and you don’t have branches/leaves to contend with. Mix aged manure/compost (I really like the Back to Earth compost brand available in most high-end nurseries) into the top portion of the soil, not disturbing the root systems. You can also follow with some mulch at this time to keep the weed populations down. Early spring (just before your perennials begin to leaf out) is good, to begin with, the first application of fertilizer (especially if not adding in aged manure/compost mixture). A mild 5/10/5slow release fertilizer applied in a ring around each plant with an additional 2 applications at 6-week intervals. Late bloomers will need an additional application in late summer. Broadcasting the fertilizer will also work as long as it doesn’t land on any leaves or in buds. Be sure to always water after fertilizing.