Here's a nice bulb bloom chart, so you can get color from Spring to Fall.
Canna Cannas are some of the most showstopping plants in the garden.
Summer Flowering Bulbs to Grow: Red Lilies Shout for Attention
This is a guide about growing gladiolus. Gladiolus are a popular summer flowering bulb. They make a dramatic statement in your garden with their tall spike of lovely flowers in many colors.
How to plant summer-flowering bulbs like dahlias, lilies, irises, begonias and gladioli. This site has really helpful information
Summer bulbs can offer some of the most stunning summer flowers. Watch and see our favorite bulbs for summer blooms.
Calla- summer bulb with gorgeous bulbs and wonderful leaves
Sometimes called Acidanthera, fragrant gladiolus offers white flowers marked with purple at the throat. The blooms are beautiful, but their best asset is the wonderful, sweet scent.
Australian and New Zealand Gardening:Hypertufa head planter
Planting Summer Bulbs: Caladium leaves come speckled in red, white and pink.