Bulbs are some of the most reliable flowers in the garden blooming year after year. Like most other flowers, most bulbs require six to eight hours of sunlight, rich soil and regular watering. Bulbs don't have special requirements for the most part. An all-white garden is cool and refreshing during the hotter summer months. White also makes other colors pop when used as an accent. Use summer flowering white bulbs to create a border of white flowers that shows off other flowers.
Plants grow from 3 to 4 feet high. Each bulb produces a single plant with three to seven or so lilies on each stem. The short knife-shaped leaves grow from the main stem. The flower buds form at the top of the stem. Flowers are star-shaped and range from a few inches across to giants that are 6 more inches across. Some varieties have petals that curl back toward the stem. Most oriental lilies are highly scented. White oriental lilies include Casa Blanca.
Calla lilies are often used in bridal bouquets. Most are white. There are miniature calla lilies as well as the standard size. The standard size has arrow-shaped leaves about 6 inches long. The flowers are about 4 inches long and trumpet-shaped with one edge of the flower longer and flared back. The stamens are yellow and prominently displayed. Calla lilies are faintly scented.
Gladiolus bloom in mid-summer. The dwarf variety is only about 18 inches high. The standard is from 3 to 4 feet high. The flowers bloom on one stalk and open from the lowest bud to the top. The gladiolus' shape is reminiscent of fluffy orchids. They come in many colors as well as white. Some are bi-colored as well.
Recognized more as an indoor gift plant at Christmas-time, amaryllis thrive in mild winter areas. The plant throws up a 2-to-3-foot stem with three to five flower buds at the top. The flowers are from 5 to 7 inches across and star-shaped from a trumpet-shaped based. Most don't have any noticeable fragrance. The leaves are long and strap-shaped. The bulbs multiply and should be separated every few years and then replanted. While most amaryllis are red, pink or variegated, there are pure white varieties.