Get a head start on tender bulbs such as begonias, cannas, colacassia (elephant’s ear), dahlia and ranunculus. Started indoors in pots. they will be larger and bloom sooner when you put them outdoors after the weather has warmed sufficiently. Check the planting details for individual bulbs or corms, but most can be potted now in a lightweight, well drained potting mix. When the shoots appear, move them to a site where they get several hours of sunlight a day. As the temperatures increase, increase their sunlight exposure.