Useful Links
Association of Gardens Trusts
BTCV [British Trust for Conservation Volunteers]
English Heritage
European Boxwood & Topiary Society
Folly Fellowship
Garden History Society
Georgian Group
Garden Organic [Henry Doubleday Research Association]
Historic Houses Association
Lutyens Trust
Museum of Garden History
National Botanic Garden of Wales
National Council for the Conservation of Plants and Gardens (NCCPG)
National Gardens Scheme
National Trust
James Pulham & Son
Royal Horticultural Society
Tree Register of the British Isles
Twentieth Century Society
UK Database of Historic Parks & Gardens
Victorian Society