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Gladiolus

Gladiolus is a genus of perennial flowering plants in the iris family (Iridaceae), commonly grown for their tall spikes of showy flowers.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Gladiolus is a genus of perennial flowering plants in the iris family (Iridaceae), commonly grown for their tall spikes of showy flowers. The name comes from Latin for “sword,” a reference to the plants’ sword-shaped leaves. The genus includes about 260 to 300 species, depending on the source, and many cultivars are used as cut flowers and garden ornamentals.

Description

Gladiolus plants are corm-bearing perennials with upright, sword-shaped leaves and spikes of funnel-shaped or irregular flowers. The flowers are often brightly coloured and are borne along a tall stem.

Taxonomy and naming

Gladiolus belongs to the iris family, Iridaceae. Its name is derived from the Latin word gladius, meaning sword, which reflects the shape of the leaves.

Distribution

The genus is native to Europe, Africa, and the Mediterranean region, with the greatest diversity in southern Africa. Some species are also native to Eurasia and other parts of Africa.

Cultivation and uses

Gladioli are widely grown as ornamental plants and are important in the florist trade. Garden hybrids have been developed in many flower colours and forms.

Key facts

  • Gladiolus is a genus of flowering plants in the iris family.
  • Most gladioli are perennial plants that grow from corms and produce tall flower spikes.
  • The genus name comes from Latin gladius, meaning “sword,” referring to the leaves.
  • Sources differ on species count, with estimates ranging from about 260 to about 300 species.
  • Many species and hybrids are cultivated as ornamental garden plants and cut flowers.
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Canadian context

Gladioli are commonly grown in Canadian gardens and used in floral arrangements, especially as summer flowering ornamentals. They are familiar to Canadian gardeners through horticultural trade and bulb/corm sales.

Frequently asked questions

What is a gladiolus?
A gladiolus is a flowering plant in the genus Gladiolus, part of the iris family, known for tall flower spikes and sword-shaped leaves.
Why is it called gladiolus?
The name comes from Latin gladius, meaning “sword,” referring to the shape of the leaves.
How many species of gladiolus are there?
Sources give different counts, but the genus is generally described as having about 260 to 300 species.
Where do gladioli grow naturally?
They are native mainly to Europe, Africa, and the Mediterranean region, with many species concentrated in sub-Saharan Africa.
Are gladioli used in gardening?
Yes. They are widely cultivated as garden ornamentals and as cut flowers.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/Gladiolus
    Supports: Genus name, iris family, cormous perennial habit, Latin name origin
  2. Encyclopaedia Britannica — https://www.britannica.com/plant/Gladiolus
    Supports: Approximate species count, native range, ornamental and cut-flower use
  3. Simple English Wikipedia — https://simple.wikipedia.org/wiki/Gladiolus
    Supports: Common name sword lily, alternate species count, native range emphasis
  4. Britannica Kids — https://kids.britannica.com/students/article/gladiolus/274567
    Supports: Corms, flower structure, name origin, garden use
  5. Missouri Botanical Garden — https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=264598&isprofile=0&
    Supports: Cultivation, flower colours, corm-bearing habit, florist trade use
  6. Royal Botanic Garden Sydney, PlantNET — https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=gn&name=Gladiolus
    Supports: Morphological description, global species estimate, distribution