How Deep Do I Plant Gladiola Bulbs?


Gladiola or gladiolus grows 2 to 6 feet high with spikes bearing a double row of trumpet-shaped flowers and swordlike leaves. Flowers are 1 to 8 inches in diameter and are produced in a wide range of colors.

Bulbs and Corms

  • "Bulb" is a general term used to describe fleshy underground organs that some plants use to store nutrients during winter. A gladiolus bulb is technically a corm, which is a mass of tissues at the base of a stem that stores nutrients.


  • Gladiolus corms are planted in late winter or early spring. The North Dakota State University Agriculture and University Extension says soil type and size of corms determine the spacing and depth of planting. In general, corms are planted deeper in sandy soils and shallower in heavy soils.

    The extension advises planting large corms 6 inches deep and 6 inches apart; medium corms 4 to 5 inches deep and 3 to 4 inches apart; small corms 3 inches deep and 2 inches apart; and cormels (pea-sized, newly formed corms) 1 to 2 inches deep and 1 to 2 inches apart.

Digging Up

  • Gladiolus corms must be dug up and stored each fall, then replanted in the spring after danger of frost has passed.


  • Photo Credit gladiola image by John Martyn from the gladiolus bulbs image by Igor Groshev from yellow gladiolus flowers image by Maria Brzostowska from
Promoted By Zergnet



You May Also Like

  • How to Plant Gladiolus

    Dig holes 3 to 6 inches deep. Plant larger corms at the deeper end of the range. Leave 2 to 4 inches...

  • How to Plant Gladiolus

    Gladiolus are tough bulbs, in addition to being one of the easiest bulbs to plant and enjoy throughout the summer. Plant gladiolus,...

  • When to Plant Gladiolus Bulbs?

    Plant your gladiolus bulbs as soon as the ground is soft enough to work with. ... How to Plant Hardy Gladiolus. How...

  • How to Plant Gladiolus in Pots

    How Deep Do I Plant Gladiola Bulbs? Types of Gladiolus Flowers. Can I Grow Daffodils in a Pot? How to Grow Gladiolus...

  • How to Divide Gladiolus

    How Deep Do You Plant Gladiolus? Featured. Decoding Laundry Directions by Check It Out. DIY Lighted Snowflakes. View Photos. Navigate the...

Related Searches

Read Article

How to Make a Vertical Clay Pot Garden

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!