Shop plants by zone, size, color, sun requirements and more!Find The Perfect Plant »
Gladiolus Flower Bulbs
An Overview of GladiolusGladiolus flowers also called "sword lilies" or "glads" are simple to grow and perfect for summer cut arrangements. Glads are also easy to divide and replant, making them a perfect flower for sharing with fellow gardeners!
Give your summers a brilliant burst of colour and abundance with gladiolus flower bulbs. These perennial flowers are well known for their height and showy blooms. With varieties ranging from 2 to 6 feet tall, all presenting neatly tiered blossoms, they are a favourite for cutting gardens and floral arrangements. Colours range from soft pastels to bold jewel tones in both solids and bi-colours, making gladiolus a versatile addition to any design. Choose individual varieties as a delightful colour contrast to existing plantings or browse our collections for a ready-made rainbow of hues.
When planting gladiolus bulbs, bear in mind that they are winter hardy in zones 7 to 10. If you live in zones 3 to 7, lift the bulbs in autumn. These flowers prefer full sun, but will accept partial shade. Gladiolus flower bulbs are tolerant of clay, loam, and sand, and thrive in any well-drained soil enhanced with a little mulch. Plant your gladiolus bulbs in the spring, about 6 inches deep and 3 to 4 inches apart. Taller varieties may need staking, so consider this when planting. Our Dutch-sourced bulbs are carefully selected for their hardiness, so you can look forward to these perennial flowers returning to grace your garden year after year. Most varieties bloom from early to midsummer.
With their mid-season bloom, gladiolus bulbs make an excellent transition between late spring bloomers like iris and fall's dahlias and asters. Create a continuously blooming bed by combining various heights of these flowers. Gladiolus flowers also make a stunning presentation when planted en masse along back borders or in tidy rows along fence lines. We recommend placing them in areas that are protected from strong winds. Smaller varieties of gladiolus make excellent container plants that require very little care. Place them along patios and porches for striking displays. Liven up your summer days with an assortment of colourful gladiolus bulbs.
Tips & Growing Instructions
After the flowers begin fading, normally around 4 to 6 weeks, it will be time to remove the corms. Dig up as much soil as you can and cut the flower stalk 1" above the corm. Dry the Gladiolus bulbs and store them indoors for the cold winter season. Most Gladiolus flowers are hardy in Zones 8-11.
Hardy Glads - In the fall, plant the hardy glads in full sun. Make sure the soil you are using drains well. Plant the corms in groups about 4-6" apart and 3" deep. Use any 5-10-5 fertilizer, but do not use animal manure since it can promote rot. During the winter months, apply mulch over the soil for protection. Hardy in Zones 5-10.
Glamini Glads - Glamini glads are very pest resistant and bloom well in full sun or partial shade. You can plant these gladiolus flowers in the middle or front of borders and beds because of their short height. They can also be grown in patio containers or window boxes where you can view their gorgeous cascades of 3-4" flowers up close from your living space. Glaminis can also be picked to be displayed in a vase. Caring for this variety is the same as for any gladiolus. Start by planting the bulb 3" deep in sun or partial shade and group them 3-4" away from each other. Glamini glads can be removed about 8-10 weeks after flowering. During the winter, dry the bulbs and store them in a cool, dark, frost-free spot.