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A picture of a Byzantine Gladiolus

Byzantine Gladiolus

Gladiolus communis ssp. byzantinus

Also known as

Turkish Corn-Flag, Cornflag, False Corn-Flag

Photo by SecretGardeningClub (All rights reserved)

Full Sun
Moderate care
Light watering
Frost Hardy


USDA zone


Minimum temperature

Expected size









  • spring
  • summer
  • autumn
  • winter

Byzantine Gladiolus Overview

Gladiolus communis subsp. byzantinus is a spring and summer flowering perennial corm that produces sword-shaped green leaves and upright stems of deep red-purple or pink flowers that can get to 1m in height. Also known as Byzantine Gladiolus or Turkish Corn-Flag, this plant has earned a Royal Horticultural Society (RHS) Award of Garden Merit and is occasionally listed with the synonym name of Gladiolus nanus 'Byzantinus' or Gladiolus byzantinus. Preferring a sheltered spot with full sun, these attractive flowers suit being included in a range of gardens, from informal cottage to coastal and gravel gardens. Where they can be planted in wildflower spaces, mixed in with other perennial flowering plants or grown purely for cut-flowers in the kitchen garden or allotment. Plant corms in autumn between 10-16cm (4-7") deep. If you are growing in heavy soil, you may wish to add additional grit or sand into the planting area to improve drainage. Allow the leaves to die back naturally to replenish the corms. You may wish to wear gloves when handling the bulbs [and wash your hands afterwards] as they are a skin irritant. Do not leave the exposed corms where pets can gain access.

Common problems with Byzantine Gladiolus

How to propagate Byzantine Gladiolus


Separate the cormlets when dormant

Special features of Byzantine Gladiolus

Attractive flowers

Attracts useful insects

Pot plant