Get as 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 after you put them outdoors once the weather has warmed sufficiently. Check the 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 rise, increase their sunlight exposure. Once the danger of frost is past, you will have plants on their way for your summer gardens or containers.