• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Gladiolus communis subsp. byzantinus

Byzantine gladiolus

AGM plants

AGM plants have been through a rigorous trial and assessment programme. They are:

  • Excellent for ordinary use in appropriate conditions
  • Available to buy
  • Of good constitution
  • Essentially stable in form & colour
  • Reasonably resistant to pests & diseases
  • Other common names Byzantine gladiolus

  • Synonyms Gladiolus nanus 'Byzantinus'
    Gladiolus byzantinus

  • Family Iridaceae

  • Genus Gladiolus are cormous perennials with fans of sword-shaped or linear leaves and spikes of funnel-shaped flowers

  • Details G. communis subsp. byzantinus is a perennial to 90cm, growing from a corm, with erect sword-shaped leaves nearly as tall as the flowering stems. Deep magenta, funnel-shaped flowers with paler markings on the tepals, are 5cm in width, and borne in erect spikes from late spring to early summer

  • Plant range S Spain, Sicily

Characteristics

  • Foliage Deciduous

  • Habit Columnar/Upright

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)

    H5

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Loam

    Loam

  • Chalk

    Chalk

  • MoistureWell-drained

  • SoilSand, Loam, Chalk

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0-0.1 metre

  • Time to ultimate height 2-5 years

How to grow

Cultivation Plant corms 10-15cm deep and 10cm apart in any well-drained with full sun. Ideal for planting in groups in the border or in gravel gardens, suits naturalising in long grass and meadows if planted out when in growth; spreads freely from cormlets. See bulbs: naturalising and bulb cultivation

Propagation Propagate by separating cormlets when dormant

Suggested planting locations and garden types Wall-side Borders Cut Flowers Flower borders and beds Cottage & Informal Garden Wildflower meadow Coastal Gravel Garden

How to care

Pruning Tidy after foliage dies down if necessary

Pests Susceptible to thrips, aphids and slugs

Diseases Susceptible to grey moulds and gladiolus corm rot

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