• 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

Horticultural shows

Competitions within RHS Horticultural shows are open to all - check our list of 2015 shows, from ornamental plants to fruit and veg (20kB pdf)

For specialist show schedules and forms, please email the Horticultural Competitions Manager Georgina Barter, tel: 020 7821 3142.

2015 Plant Society events at RHS Garden Wisley

Paeonia Coral CharmThe Peony Society 
31 May

Flower show with expert advice,  plant displays and educational displays. More about the Peony Society
1pm (following AGM) - 4pm Hillside Event Centre


Mammillaria surculosaMammillaria Society Show
7 June

Talks about Mammillaria to suit experts and novices plus informal networking and plant and photo displays. 
More about the Mammillaria Society
10am - 3pm Hillside Event Centre


Digitalis x mertonensisDigitalis trial event
10 June

Talks, demonstrations and displays linked to the Digitalis trial.
12.45 - 4pm Hillside Event Centre


Visitors talking to nursery ownersAll About Plants
20–21 June

From delphiniums to dahlias, edibles to sweet peas, orchids to cacti, there’s so much for both the plantsman and novice to discover at All About Plants. This large garden event on Wilson's Wood and Seven Acres explores the past, present and future of plants with displays, competitive shows, plant sales and evidence of new breeding from a range of plant societies.

Dahlia FascinationThe National Dahlia Society
8–13 September

Featuring the NDS Annual Show (8 - 11 Sept), dahlia displays (12 - 13 Sept) and People's Dahlia Competition, as part of The Wisley Flower Show.
More about the National Dahlia Society


Dahlia Northwest CosmosDahlia Study Day
23 September  

Talks, demonstrations and displays linked to the Dahlia Trial. Featuring flower and photo displays, plant sales, educational displays and the chance to ask the experts your questions. More about the National Dahlia Society                            
10am - 4pm Hillside Event Centre

Cyclamen hederifolium

Cyclamen Autumn Show
11 October

The Cyclamen Society Autumn Show, offering exhibits of autumn-flowering Cyclamen and companion bulbous plants. Meet the cyclamen experts, too. More about the Cyclamen Society
10am - 4pm Hillside  Event Centre

2015 Events at RHS Garden Hyde Hall

Iris Blue-eyed BrunetteBritish Iris Society Summer Show
31 May

Featuring a competitive show, plant displays and images, plant sales and experts available to answer your questions. More about the British Iris Society
Sun: 11am (following judging) - 4pm

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