Now is the time to cut back your damaged plants. Prune back any deadwood that was hit by the freezes. Also remove any potted plants that have no root system left.
Go to the nurseries and choose plants that you like and if you are planting flowers, look for ones that I call "Shoulder Season" plants. Petunias, snapdragons, dianthus, marigolds and cosmos are good choices for these large temperature range days we have. You can certainly add some late season pansies and violas - you will get about 2 months out of them.
This is a great time to plant up some cactus and perennials too! Love hummingbirds? Try some salvia.
Have some fun as it has been a long winter!