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The Trees and Design Action Group (TDAG), brings together individuals, professionals, academics and organisations from wide ranging disciplines in both the public and private sectors to improve knowledge and good practice to support the role of urban trees through better collaboration in the planning, design, construction and management and maintenance of our urban places. We run free to attend online seminars - see 'Events'.
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NewsNewsletter – September 2026
This includes TDAG events and activities; events organised by others and an extensive list of new publications and research. We would like to encourage more research dissemination and so are introducing a ‘Research Round-up – Implications for practitioners’ inviting researchers to tell us about their completed projects and why they are relevant for practitioners working with trees. Please submit a short outline here. 
Just published!
Street Trees: A Guide to Planting, Establishment and Aftercare. Forestry Commission (August 2026) The Trees and Design Action Group was a member of the steering group for this new guidance document for the Forestry Commission looking at all aspects of street tree planting in both new streets and retrofitting supported by technical drawings by Team Civic. Street Trees: A Guide to Planting, Establishment and Aftercare is available as a pdf below and an accessible version will be on the government website in due course.
New NPPF is now published
The new National Planning Policy Framework (NPPF) has some good news for trees - see Chapter 19, N3: Trees in new development 1. In recognition of the benefits which trees can provide for biodiversity, climate change mitigation and adaptation, and the character and quality of the built environment, development proposals should: a. Make new streets tree-lined (unless there are strong reasons why this would be inappropriate in specific streets), and incorporate trees in other suitable locations, such as in parks and through the provision of community orchards; b. Ensure that the selection of species and their placement is compatible with highways and other infrastructure requirements and the needs of different users of public spaces; and will be effective in helping to adapt to the effects of climate change and delivering other environmental benefits. Suitable arboricultural advice should be sought, and proposals discussed with highways and trees officers where necessary, so that the right trees are planted in the right places; and c. Make provision for the long-term maintenance of both existing and newly-planted trees which form part of the development. The National Planning Policy Framework document is available online.
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Sue James [email protected] Administration Deanne Brettle [email protected] Follow us BlueSky Please note: TDAG does not have the resources to comment on individual tree cases or other local issues. | ||||||||
