Explore our Champion Trees
Join today and access the Champion Tree searchable database – over 90,000 trees listed and updated regularly. Provides details on the definitive champion trees, the tallest and largest of their species, by country, county and for all Britain and Ireland
Existing members returning for the first time please go to Login and create a new password by using the Lost your password? link.
Welcome to the Tree Register
The Tree Register is a charity registered as the The Tree Register of the British Isles, whilst often referred to as The Tree Register of Britain and Ireland, or simply by its acronym TROBI.
It records the trees of Britain, Ireland, the Channel Isles and the Isle of Man.
Champion Trees
The Register
Volunteer run
Tree of the Week
© Owen Johnson (June 2025)
Tree ID: 129960
Arbutus menziesii, Trinity (Edinburgh)
Champion Status
Height Country Champion tree of Scotland
Girth & Height County Champion tree of Edinburgh
Height (m): 18
Girth (cm): 237
Genus: Arbutus
Species Name: menziesii
Common Name: Madrone
County: Edinburgh
Country: Scotland
Comments:
Featured Sites
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Stourhead
Owned by the National Trust.
An outstanding landscape garden with magnificent 19th century specimen trees.
Includes within its woodland the tallest Pedunculate oak (Quercus robur) in Britain & Ireland, measured by the National Trust in 2012 with an organised climb.
Look out for other champions such as the variegated Tulip Tree (Liriodendron tulipifera ‘Aureomarginatum’, Magnolia dawsoniana and the Californian Nutmeg (Torreya californica)
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Lismore Castle
Jim Gardiner VMH
During the middle of March (2026), we visited Lismore Castle in County Waterford, the home of the Dukes of Devonshire since the end of the 18th Century and now the private family home of Lord and Lady Burlington. The gardens, covering 10 acres (4Ha) were only developed in the middle of the 19th Century with the help of Sir Joseph Paxton who created three distinct gardens, the Reilig re-opened in 2021, the Upper with its beautifully restored Paxton Vinery and the Lower Garden. And it was here our host Colm O’Driscoll, the Head Gardener lead us past a huge Magnolia delavayi planted against the Castle walls before descending into the Lower Garden, across the lawn and through the Yew Avenue before standing next to the largest Magnolia sprengeri I have seen, and it was in full flower!
2026 Yearbook
Download our 2024-25 yearbook
Members will receive a complimentary copy of our 2025-26 Yearbook in Autumn 2026
Hard copies are still available of our 2023-24 and 2024-25 Yearbooks at £10 each inc. P&P
Want to volunteer?
Volunteers are needed to check that our champion trees are surviving, are correctly plotted on the map and have up to date photos and information.
For those interested in measuring trees to update our information, or submit new records, we can provide guidance and tuition from experienced tree measurers.
If you are interested in helping in any way please contact us at info@treeregister.org
Join the Tree Register Today
The Tree Register is open to all and is a valuable resource of tree growth and species distribution throughout Britain, Ireland, the Channel Isles and Isle of Man. Join today and access the Champion Tree searchable database – over 90,000 trees listed and updated regularly.
The Tree Register provides details on the definitive champion trees, the tallest and largest of their species, by county, country and for all Britain and Ireland.