• 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 'Robinetta' (recurvus hybrid)

sword lily 'Robinetta'

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 sword lily 'Robinetta'

  • Family Iridaceae

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

  • Details 'Robinetta' grows to around 50cm and in early summer produces rich-pink flowers with a narrow cream splash on the lower petals

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)

    H3

Colour

Sunlight

  • Full Sun

  • Aspect South-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureWell-drained

  • SoilSand, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0-0.1 metre

  • Time to ultimate height 1-2 years

How to grow

Cultivation Grow gladioli in fertile, well-drained soil in full sun. Plant corms 10-16cm deep in spring. If the soil is not perfectly drained, plant the corms on a bed of sand. When the flower spikes reach one third to half their final height, feed with a potassium-rich fertiliser such as a tomato feed. Repeat every 10-14 days until three weeks after flowering. In areas where there is frost, lift the corms when the foliage has turned yellow-brown. Snap the stem off the corms and dry the corms off for 14 days and keep the new corms dry and frost-free until planting time

Propagation Separate cormlets when lifting in autumn

Suggested planting locations and garden types Flower borders and beds Cut Flowers City & Courtyard Gardens Coastal Cottage & Informal Garden Patio & Container Plants

How to care

Pruning Snap off old stems from the corms when lifting them for winter storage

Pests Thrips, aphids and slugs can affect gladioli

Diseases Gladiolus corm rot and grey moulds (botrytis) can sometimes cause problems

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