• 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

Dahlia 'Trelyn Crimson' (Col) AGMPeople’s Dahlia competition

If you grow a favourite dahlia why not enter the People’s Dahlia competition at the Wisley Flower Show? Winners will receive vouchers and other prizes, and all entries will have the chance to win the special Visitors’ Choice Award which is new for 2017.

To enter simply bring a cut stem of your dahlia to the National Dahlia Society marquee before 12noon on Saturday 9 or Sunday 10 September.  We will supply everything you need to enter and show your flower.

Normal garden entry applies

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.

2017 Plant Society events at RHS Garden Wisley

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



SarraceniaCarnivorous Plant Society Show
19 - 20 August

Displays of carnivorous plants, free propagation & care demonstrations, and the chance to ask the experts for advice on the planting, care and use of carnivorous plants. Unusual plants for sale.
10.15am - 4.30pm Glasshouse Gallery 

Woman admiring dahlias at WisleyNational Dahlia Society Show
5 - 10 September

Part of the Wisley Flower Show, the NDS national show features more than 100 classes. See displays from local nurseries, buy plants and blooms, and enter your own dahlias in the People's Dahlia Competition. 
Wisley show opening times apply excl. Tuesday 6 September, when the show opens at noon (after judging)

Erica cinerea f. aureifolia 'Golden Hue'Heather Society Show
 24 September

Join a tour of the Wisley National Heather Collection. Talks, planting and heather care demonstrations, advice and plant sales.
10.30am - 4pm 
More about the Heather Society Show

Cyclamen hederifoliumCyclamen Society Autumn Show
15 October

Exhibits of autumn-flowering Cyclamen and companion bulbous planting. Meet the cyclamen experts for advice. Specialist plant sales.
10am - 4pm 

Pinus densifloraConifer Society Show
22 October 

Displays of conifers and cones; chat with experts for advice on the planting, care and use of conifers in all parts of the garden; free workshops and demonstrations; tours of the Wisley Conifer collections; plants for sale.
Noon - 4pm

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