Gladiolus is a classic perennial known for its tall flower spikes. Great cutting flowers, gladiolus look beautiful in midsummer bouquets.
Available in a multitude of colors, gladioli grow between 2 to 6 feet in height.
The taller varieties, which should be staked, are often placed in the back of a garden to nicely complement shorter plants.
In zones 7 and colder, gladioli corms need to be lifted—and replanted in the spring.