University of Lausanne, Switzerland
Sissinghurst Castle Garden, Kent
Swiss Federal Railways
Coleton Fishacre, Devon
Alexander Tighe Gregory
Johann Melchior Wyrsch (Buochs, Switzerland 1732 - Buochs, Switzerland 1798)
Antony Private Collection, Cornwall
Switzerland
Chastleton House, Oxfordshire
Touring Club suisse
Cragside, Northumberland
Ickworth, Suffolk
Musée d'art et d'histoire, Geneva, Switzerland
Upton House, Warwickshire
Neuchâtel (Switzerland : Canton). Département de l'instruction publique
Bern (Switzerland : Canton)
Nostell Priory, West Yorkshire
after Joseph Mathias Negelen (Porrentruy, Switzerland 1792 – Porrentruy 1870)
Dunham Massey, Cheshire
Old Catholic Church in Switzerland
Association of Master Gardeners of Switzerland
Chartwell, Kent
Wilhelm-Friedrich Gmelin (Badenweiler 1760 - Rome 1820)
Joseph Mathias Negelen (Porrentruy, Switzerland 1792 – Porrentruy 1870)
Greys Court, Oxfordshire
attributed to Edward Tayler (Orbe, Switzerland 1828 – London 1906).
Edward Tayler (Orbe, Switzerland 1828 – London 1906).
Wallington, Northumberland
Raoh Schorr (Muttenz, Switzerland 1901 - London 1991)
Shaw's Corner, Hertfordshire
after Edward Tayler (Orbe, Switzerland 1828 – London 1906).
Stourhead, Wiltshire
Llanerchaeron, Ceredigion
Arts Council of Great Britain
Scotney Castle, Kent
Geneva Academy, Switzerland
Evangelisch-Reformierte Landeskirche des Kantons Zürich
Castle Ward, County Down
attributed to Joseph Mathias Negelen (Porrentruy, Switzerland 1792 – Porrentruy 1870)
Ormesby Hall, Redcar and Cleveland
Luigi Tagliani (b. Switzerland c. 1800)
Jacques-Laurent Agasse (Geneva 1767 - London 1849)
Wightwick Manor, West Midlands
Dyrham, Gloucestershire