Finding rare and threatened cultivars

Over 2,000 threatened plants have already been found in the first 56 genera investigated. Most are already safe in National Plant Collections, and many more are held in a great variety of other notable gardens.

 
* accessions not taxa
These numbers include ten National Plant Collections® held by RHS Gardens, the National Trust, Hilliers the University of Oxford Botanic Garden and Thorp Perrow Arboretum. 

Plant records from the following collections of national importance across Britain, Ireland, the Isle of Man and the Channel Islands are being checked, as part of the Threatened Plants Project (TPP), for old or rare cultivars. Checking is carried out both at National Office, where confidential plant lists are held, and remotely by volunteers, for those collections for which plant records are publicly available over the internet. If you would be interested in volunteering, have a look at which genera are available.

Collections being checked:

England
541 National Plant Collections® in 41 counties or equivalent, coordinated by Plant Heritage National Office and 29 regional Plant Heritage Groups

Royal Botanic Gardens, Kew, Surrey

Kew at Wakehurst Place, West Sussex

Kew at Castle Howard, Yorkshire

National Arboreta, Westonbirt Arboretum, Gloucestershire and Bedgebury Pinetum, Kent.

47 National Trust properties and their Plant Conservation Programme

Four Royal Horticultural Society Gardens at Wisley, Surrey; Hyde Hall, Essex; Harlow Carr, Yorkshire and Rosemoor, Devon

14 English Heritage properties in 11 counties

National Fruit Collection, Brogdale, Kent

Sir Harold Hillier Gardens, Hampshire

Eden Project, Cornwall

University of Oxford Botanic Garden and Harcourt Arboretum, Oxfordshire.

Cambridge University Botanic Garden

Sheffield Botanical Gardens

Bristol Zoo Gardens

Quinta Arboretum, Cheshire

Royal Holloway, University of London

Jodrell Bank Discovery Centre, University of Manchester

Thorp Perrow, North Yorkshire

Trebah, Cornwall

Bradenham Hall Gardens, Norfolk

Bodenham Farm & Arboretum, Worcestershire

Foxhill Arboretum, Cheshire

Keele University Arboretum, Staffordshire

Pinetum Park & Pine Lodge Gardens, Cornwall

Hardy Plant Society Conservation Scheme, and the Pulmonaria Group's Pulmonaria Conservation Project

Wales

30 National Plant Collections® in 12 counties, coordinated by Plant Heritage National Office and the local Plant Heritage Group

National Botanic Garden of Wales/Gardd Fotaneg Genedlaethol Cymru, Carmarthenshire/Sir Gâr

Four National Trust/Ymddiriedolaeth Genedlaethol properties in three counties

26 Cardiff/Caerdydd parks

Scotland

61 National Plant Collections® in 16 counties, coordinated by Plant Heritage National Office and five local Plant Heritage Groups

Four gardens of the Royal Botanic Garden Edinburgh at Edinburgh; Benmore, Argyll; Dawyck, Scottish Borders and Logan, Dumfries & Galloway

 St Andrews Botanic Garden

Ireland

11 National Plant Collections® in five counties, coordinated by Plant Heritage National Office and the Irish Garden Plant Society

National Botanic Gardens of Ireland/Garraithe Náisiúnta na Luais at Glasnevin, Dublin and Kilmacurragh Arboretum, Co. Wicklow

One National Trust in Northern Ireland (Rowallane Gardens) property

Numerous sites in 30 counties surveyed by the Tree Council of Ireland

Jersey and Guernsey

Four National Plant Collections® in the Channel Islands, coordinated by Plant Heritage National Office and the Guernsey Plant Heritage affiliated Group

Please do contact me if you are aware of any other collections of national significance likely to contain rare cultivars.

Last update 10/4/12