Podophyllum trial 2025–2028

Objectives and purpose of the trial

The RHS has not trialled Podophyllum (Berberidaceae family) cultivars before, so this is an opportunity to bring this genus of plants to a wider audience and see how the different species and cultivars perform side by side in the same bed at RHS Rosemoor, Devon. As part of the trial, the RHS trials team aims to demonstrate cultivation techniques and overall assess the plants for garden performance and best varieties to grow. Those that perform best will be awarded the RHS Award of Garden Merit (AGM).
Podophyllum ‘Kaleidoscope’ thriving beautifully in a pot
Podophyllum ‘Spotty Dotty’ stands out in a mixed planting bed

Judges and criteria

Judging criteria

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

  • General ornamental use within the garden
  • Decorative value of foliage
  • Flower quality (size, colour, length of season)

  • Hardiness
  • Drought tolerance
  • Pest and disease resistance

RHS Award of Garden Merit logo
Buy AGM plants at RHSplants.co.uk

Choose from hundreds of specially-selected plants, bulbs, seeds and gardening products in our online shop.

Shop now

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 trials@rhs.org.uk.

Love gardening

Sign up to receive regular gardening tips, inspiration, offers and more

View our Privacy Policy

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.