Useful links

Beth Chatto Gardens 
Borde Hill - Borde Hill Gardens in Sussex
Birmingham Botanic Gardens - Birmingham Botanic Gardens and Glasshouse
Cambridge University Botanic Garden
Caerhays Castle & Gardens Located in a sheltered valley overlooking Porthluney Cove on the South Cornish Coast equidistanat from Truro and St Austell.
Chelsea Physic Garden - London's Secret Garden
Crarae - One of Scotland's greatest gardens
Durham University Botanic Garden
Easton Walled Gardens Grantham, Lincs
Givernynet - Giverny-Vernon: Impressionist gardens
Great British Gardens Great British Gardens provide an excellent reference for anybody wishing to visit gardens in England, Scotland, Wales, Northern Ireland 
Garden Furniture - The Uk's largest on-line garden shop.
Heligan - The Lost Gardens of Heligan
Kew Web - The website of the Royal Botanic Gardens, Kew.
Local Today A free site on which to advertize your event.
Sir Harold Hillier - Sir Harold Hillier Gardens and Arboretum
The Harvard University Arnold Arboretum
The National Botanic Gardens of Wales
The Royal Botanical Garden, Edinburgh