Home Garden

What Flower Bulbs Can Be Planted in the Spring & Summer to Come Up in the Fall?

People usually think of fall as the time to plant bulbs, but you can also plant bulbs in the spring or early summer. Most of these bulb flowers will bloom in the summer and continue blooming into the fall. In cooler areas, gardeners need to dig the bulbs of some of these flowers before the first frost, store them inside and replant them in the spring. Others are hardy enough to over-winter outside. Late-blooming bulb flowers include lilies, cannas, gladiolas, dahlias, begonias and showy crocus.
  1. Lilies

    • Lilies (Lilium spp.) are big, beautiful and easy to grow. Lilies grow in U.S. Department of Agriculture plant hardiness zones 3 through10 and come in 80 species and hundreds of cultivars. Their colors range from white and pastel pinks to vivid reds and oranges. Their height ranges from 2 to 8 feet. Taller lilies need to be staked and protected from the wind. Most lilies need full sun, although some varieties will tolerate partial shade. Tiger lilies (Lilium lancifolium) can carry disease, so they should be planted a distance from other lilies. They grow in USDA zones 3 through 9. Swamp lilies (Crinum americanum) thrive in USDA zones 7 through 11. They can grow in standing water and have a pleasant fragrance.

    Cannas

    • Cannas (Canna generalis) come in more than 60 cultivars with different colors. Their long blooming time makes them a favorite, as do their large, broad leaves and size -- they range from 2 to 10 feet tall. Cannas need sun for six hours or longer each day. They can be left in the ground in USDA zones 7 and 8, but in cooler zones, gardeners need to dig the bulbs (actually rhizomes) in the fall. The rhizomes should be dried for a few days and then stored in organic material at cool temperatures for the winter; they can be planted again the following spring.

    Gladiolus

    • Gladiolus (Gladiolus X hortulanus) is well loved for its bright colors, multiple blossoms on each stem and size -- it grows from 1 to 8 feet tall. Because it is so tall, it needs to be staked. It does best in full sun and is easy to grow. Planted in rows 3 feet apart, gladiolus makes a glorious statement in the garden. It is also a popular cut flower. Gladiolus bulbs should be dug before the first frost, dried and stored in organic material where it’s cool. The bulbs can be left in the ground in USDA zone 8 or warmer climates.

    Others

    • Dahlias (Dahlia hortensis) come in many different varieties, colors and sizes, with blooms ranging from less than 1 inch to more than 8 inches wide. They thrive in full sun to partial shade. Hardy only in USDA zones 8 through 10, gardeners must dig the bulbs in the fall in cooler climates. The showy crocus (Crocus speciosus) is small, just 5 to 6 inches tall. This is not the traditional crocus that blooms in early spring, but a fall-blooming flower. Showy crocuses have no foliage when they bloom in the fall, but their flowers are lovely and come in blue, purple, pink or white. They grow in full sun or partial shade and are hardy in USDA zones 4 through 8. Tuberous begonias (Begonia tuberhybrida) are beautiful but don’t handle stress in the environment well, so they must be protected from wind, drought or excessive rain. They grow as annuals or perennials in USDA zones 3 through 10. Gardeners must dig the tubers in the fall unless they live in USDA zones 9 and 10, where they need to covered with mulch for protection.