The flowers are usually found in the same side of the stem, and are long and funnel-shaped. The elegant flowers come in an array of colors, from deep red, yellow, mauve, to pink and white. The sepals and petals of the flowers are identical, called tepals. The dorsal tepal is larger than the other three tepals.
Ideally, the corms should be planted about 2 to 3 inches deep, and 6 inches apart. The large corms can be planted about 4 to 5 inches deep, and about 7 inches apart. Each row should be spaced at least 21 to 35 inches apart.
How to Take Care of Gladiolus
Gladiolus cannot compete with weeds. So, be sure to remove weeds from time to time. For growing healthy gladioli, you have to maintain the appropriate level of soil moisture. So, apply 2 to 3 layers of mulch around the plant, as it can help retain moisture. Mulching can also help control the growth of weeds.
Regular watering is another important aspect of plant care. Watering can be done on weekly basis, especially during the dry periods. The site selected for planting gladioli should receive lots of sunlight. Fertilization is required only when the soil is not fertile, or when the plant is not thriving. In such a situation, you can apply a liquid fertilizer.
Deadheading is also an important part of plant care. So, remove the individual flower, as soon as it fades. When all the flowers are spent, cut the entire flower stalk to the ground. If your area is prone to hard frost, then lift or dug up the corm before the first frost.
Trim the stem up to half-inch of the corm, in about 6 to 8 weeks after the end of the blooming period. Take proper care of the gladiolus bulbs by removing soil and roots from them, and drying them in a well-ventilated and warm place.
In warmer areas, the corms can be left on the ground. But be sure to apply a layer of mulch over them. You can store the corms, and use them to grow gladioli in spring.