Gladiolus is a bright-blooming flower that is especially attractive when planted as clusters. Gladioli have long-lived blooms that do well as cut flowers. The plants typically flower from the middle of summer until the first frost; you can stagger the plantings so that they do not all bloom at once. Transplanting a gladiolus means moving the corm from one location to another. Plant your gladiolus corm in a spot with excellent drainage and full sunlight for the best blooming. Add a layer of mulch to keep the weeds down and retain moisture.
Start the corms in mid-April. Place them in a shallow dish filled with 1/4 inch of water.
Place the dish on a windowsill with bright, filtered sunlight. This allows the corm to start germinating.
Plant the corms in the ground, each with its growing tip up, when the weather warms. Bury each corm 5 to 8 inches deep and about five inches apart. If the growing tip is less than 5 inches tall, bury it completely, but take care not to harm the delicate tip.
Wait until the blooms are dead after the growing season.
Dig up the corms with a trowel.
Clean the excess dirt from the corms, but do not wash them with water.
Place the corms in a paper bag. Leave them in a cool, dry place over the winter, until the first leaves are on the trees in the spring.
Plant the corms in the ground, growing tips up, when the weather warms. Bury each corm between 5 and 8 inches deep. Space the corms five inches apart. Bury the entire growing tip if it's less than 5 inches tall, but be careful not to harm the delicate tip.