Gladiolus trial 2024–2025

Objectives and purpose of the trial

The purpose of this trial is to compare, record and display the merits of new and established Gladiolus (gladioli) cultivars. The RHS Trials team will assess a range of Gladiolus varieties at RHS Wisley, Surrey, and recommend plants that show all-round garden worthiness. Those that perform best will be awarded the RHS Award of Garden Merit (AGM).
Establishing Gladiolus plants in the trials beds during summer
Close up of the dramatic blooms of Gladiolus ‘Astarte’

Judges and criteria

Judging criteria

The following factors are all taken into consideration as part of the judging of the trial:

  • Colour and impact
  • Number of florets and size
  • Reliability and sturdiness

  • Uniformity of spikes
  • Pest and disease susceptibility

Suppliers to the trial

List of plants in the trial

View all of the gladioli on trial at RHS Wisley
  • Gladiolus ‘Mon Amour’
  • Gladiolus ‘Blue Storm’
  • Gladiolus ‘Cobain’
  • Gladiolus ‘Mantovani’
  • Gladiolus ‘Poppin Pink’
  • Gladiolus ‘Yvonne’
  • Gladiolus ‘Purple Art’
  • Gladiolus ‘Purple Rain’
  • Gladiolus ‘Indian Summer’
  • Gladiolus ‘Chemistry’
  • Gladiolus ‘Next Level’
  • Gladiolus ‘Astarte’
  • Gladiolus ‘Watermelon Delight’
  • Gladiolus ‘Adele’
  • Gladiolus ‘Thalia’
  • Gladiolus ‘Sisi’
  • Gladiolus ‘Lennon’
  • Gladiolus ‘Frosted Lace’
  • Gladiolus ‘Adrenalin’
  • Gladiolus ‘Bartok’
  • Gladiolus ‘Michelle’
  • Gladiolus ‘Rhubarb and Custard’
  • Gladiolus ‘Magma’
  • Gladiolus ‘Bonfire’
  • Gladiolus ‘Puccini’
  • Gladiolus ‘Black Jack’
  • Gladiolus ‘Robinetta’
  • Gladiolus ‘Berlioz’
  • Gladiolus ‘Mahler’
  • Gladiolus ‘Iguazu’
  • Gladiolus ‘Olympic Flame’
  • Gladiolus ‘Demarrage’
  • Gladiolus ‘Avicii’
  • Gladiolus ‘Cornelli’
  • Gladiolus ‘Peter Pears’
  • Gladiolus ‘Prince of Orange’
  • Gladiolus ‘Georgia Peach’
  • Gladiolus ‘Bono’
  • Gladiolus ‘Apricot Bubblegum’
  • Gladiolus ‘Route du Soleil’
  • Gladiolus ‘Cream Perfection’
  • Gladiolus ‘Mulbery Muffin’
  • Gladiolus Murielae
  • Gladiolus ‘Amber Mystique’
  • Gladiolus ‘Mount Everest’
  • Gladiolus ‘Mount Victoria’
  • Gladiolus ‘Serena’
  • Gladiolus ‘Snowboard’
  • Gladiolus ‘Ice Master’
  • Gladiolus ‘Pink Lace’
  • Gladiolus ‘Moonlight Shadow’
  • Gladiolus ‘Kio’
  • Gladiolus ‘Prima Verde’
RHS Award of Garden Merit logo
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Handy tools and information

Get in touch

For more information on our RHS Plant Trials or to access older trial reports, please get in touch with our team via email at [email protected].

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