Hi, Well sadly there are no bulbs or perennials that bloom all year long. Plants like these come in and out of bloom, depending on their species and variety. However, with bulbs you can plant early risers such as crocus along with late bloomers such as alliums and have something in bloom from bulbs from March till July. To keep the color show through the summer with bulbs, you'll need to plant lilies, dahlias and gladiolus after frost danger in the spring. All of them bloom in late summer through fall.