Horticultural
federations and guilds operate on a county-wide basis with a membership base consisting of horticultural societies and gardening clubs. They provide access to a vast network of gardening clubs and societies, and help their members with advice on the day-to-day organisation of local club business and other society matters.
The RHS encourages garden clubs and societies to join their local horticultural federation for further support and access to activities and events in their local area; some also train judges for horticultural shows and events.