• 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
Visitors at a Plant Society event

Horticultural shows


Competitions within RHS Horticultural shows are open to all - check our list of 2017 competitions (48kB pdf), from ornamental plants to fruit and veg.

For specialist show schedules and forms, please email Georgina Barter, Horticultural Competitions Manager, or telephone 020 7821 3142.

2018 Plant Society events at RHS Garden Wisley

All Plant Society events are normal garden admission, unless otherwise stated.

Check back soon for a full list of 2018 Plant Society events at Wisley.



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We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.