How Big Do Gladiolus Get

How To Care For Gladiolus Throughout the Season. Growth Habit: Gladiolus have narrow, sword-like leaves and tall flower stalks. The flower stalks can grow 2 to 4 feet tall while only spreading 1 foot wide.

Will gladiolus bulbs multiply?

Like many perennial plants, gladiolus grows from a large bulb each year, then dies back and regrows the following year. This “bulb” is known as a corm, and the plant grows a new one right on top of the old one each year.

How long does it take to grow gladiolus?

Planting time determines bloom time, so instead of planting all of your gladiolus corms at once, purchase enough so you can plant a handful every week from spring through early-summer. It typically takes 10 to 12 weeks from planting to flowering.