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Lost Elms & The Trees and Shrubs Online Resource

Lost Elms & The Trees and Shrubs Online Resource

Wednesday 10 December 2025 @ 6PM GMT

Lost Elms & The Trees and Shrubs Online Resource

CPD hours or CEU points available

With Mandy Haggith and John Grimshaw

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Mandy’s talk will dwell on elms, of all species, and the devastating impact that Dutch elm disease has had on so many of them, killing hundreds of millions of trees around the northern hemisphere over recent decades. It will not be all doom and gloom, however, and I will discuss reasons we have to be hopeful about their ongoing survival in our landscapes. Mandy has been reading, thinking and writing a lot about elms over the past few years, writing a book about them and running a community project to celebrate our currently disease-free population of magnificent trees where I live in Assynt, in north west Scotland. My book, The Lost Elms, is a love story to elm trees and all that they represent. In my research for the book I have found that many people share my childhood experience of losing treasured elm trees. Our link to the elm family is a profound part of our cultural heritage; we have a folklore rich in symbolism that invokes the elm as both a tree of mourning and a tree of marriage, and one with so many practical uses, from water mains to coffins. We must not give up on elms!

John Grimshaw’s talk: Trees and Shrubs Online: a reference for the 21st Century

Trees and Shrubs Online (TSO) is a free to access digital encyclopaedia of woody plants cultivated in temperate gardens, presented by the International Dendrology Society. Based on existing texts, the project aims to present an entirely renewed set of information for anyone interested in trees and shrubs. In this talk John Grimshaw, Editor-in-Chief, will explain the origins of the project and how to get the best of out of the website, as well as outlining plans for its future development.

Mandy Haggith

Mandy Haggith

Biography

Mandy Haggith lives and writes in Assynt. After two decades as an international forest researcher and activist, with a focus on the paper industry, she currently works at the University of the Highlands and Islands. She has been poet in residence at the Royal Botanical Gardens Edinburgh and at Inverewe Garden and for many years has run a tree poetry project, A-B-Craobh (A-B-Tree), inspired by the Gaelic tree alphabet. Her books include six poetry collections, a tree poetry anthology, five novels and two non-fiction books - most recently, The Lost Elms. www.mandyhaggith.net

John Grimshaw

John Grimshaw

Biography

John Grimshaw has been interested in plants his entire life, as both gardener and botanist. He holds a first class degree in botany and a doctorate in the ecology of the forests of Mt Kilimanjaro from Oxford University. His Tanzanian connections remain important, and he’s proud to be an honorary elder of the Maasai community of Lerang’wa, Tanzania. African plants remain an important botanical interest, but he is fascinated by all plants and has grown a huge diversity in his gardens. He has travelled widely to see plants growing in habitat. His first book was The Gardener’s Atlas (1998), recounting the journeys plants have made from their source to our gardens.

Working in The Netherlands for the seed company K. Sahin, Zaden. B.V., John was responsible for developing perennials and other plants for the seed trade. This gave him invaluable experience of commercial horticulture and management. Following that he joined Colesbourne Park in Gloucestershire as Gardens Manager, where he was responsible for maintaining and developing the historic Elwes family garden, especially the snowdrop collection. He co-authored the monograph Snowdrops (2002) with M Bishop & A Davis, published by Griffin Press. Between 2004-2009 he was lead author of a major book on trees introduced in the past 35 years, entitled New Trees, Recent Introductions to Cultivation, with co-author Ross Bayton. It was sponsored by the International Dendrology Society and was published by RBG Kew, in May 2009.

In August 2012 he became Director of The Yorkshire Arboretum, North Yorkshire, with responsibility for the 120-acre arboretum and 20-acre Ray Wood, on the Castle Howard estate. This involved a wide range of management and administrative duties, fundraising and networking as well as active curation of the extensive collection. In 2021 the arboretum opened the country’s first dedicated Tree Health Centre, to raise awareness of the problems facing trees from diseases, pests and climate change. A Red Squirrel Enclosure was opened in 2023, with immediate breeding success. John was appointed MBE for ‘services to tree health and plant conservation’ in the King’s 2024 New Year Honours List.

John is a member of the Royal Horticultural Society’s Nomenclature and Taxonomy Advisory Group, the RHS Woody Plant and Gardens Expert Groups, and in 2012 led the RHS review of the Award of Garden Merit.

He is Editor-in-Chief of the International Dendrology Society’s Trees and Shrubs Online www.treesandshrubsonline.org, an encyclopaedic work covering all temperate woody plants. In this capacity he works with an international team of authors and editors preparing text and sourcing images to create this uniquely comprehensive work.

In October 2024 he became Editor-in-Chief of Curtis’s Botanical Magazine for the Royal Botanic Gardens, Kew, stepping down from the Yorkshire Arboretum. The magazine is the longest running illustrated botanical publication, with an unbroken history since 1787, and is famous for its combination of botany, horticulture and fine botanical art.

In his own garden in Settrington, North Yorkshire, he grows as many plants as he can, focusing on hardy perennials and bulbs, but is very prone to temptation to grow something new and curious.

He speaks and writes widely on horticultural and tree-related subjects. Other interests include the arts, cookery and poultry-keeping.

X, Instagram: @johnmgrimshaw

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Buy Roots here

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