2023: tickets for this event are no longer available

Seminar 2022 watch back

Presented in association with

organisers of

with support from

If you missed it on the day, the good news is that you can still watch the GLDA’s 26th annual International Design Seminar 2022 which took place on Saturday 26th February 2022.

Theme: PLAN Trees, PLANT Trees, PLANET Trees. Creative Design with Trees in our Landscape, Streetscape and Gardens.

Tickets, which give you full on-demand access to videos of all the presentations on the day, are now available in the following categories:

  • Full, Pre-Reg and Corporate Members & Friends of the GLDA: €60
  • Friend + 1 year subscription: €110
  • Student + 1 year membership: €45
  • Non-Member: €70

(Scroll down to purchase.)


Charlotte Harris, garden designer and Chelsea gold medallist who, with Hugo Bugg, created Harris Bugg Studio in 2017. They were recently described by the Royal Horticultural Society as “pioneering design talents of their generation”. Their wide-ranging projects focus on the responsible use of materials, maintaining a sense of place and recognising the innate need of people to connect with nature. Harris Bugg Studio won gold for their 2021 Chelsea garden which portrayed a pocket park with robust and resilient planting and aimed to highlight the importance of beautiful and restorative green spaces in the places we need them the most – our towns and cities. www.harrisbugg.com

Charlotte’s talk at the seminar is entitled: From edible woodlands to rooftop forests – how tree-planting forms a powerful and integral part of the design narrative and delivers benefits for gardens large and small.


Thijs Dolders, a landscape architect and plant advisor at Ebben tree nursery based in Utrecht in The Netherlands. Thijs is a self-declared ‘plant nerd’ who has studied and worked in the landscape industry for over 12 years. He studied landscape architecture (BSc and MSc) at Wageningen University, the Netherlands, which included a semester in ecological and planting design at the renowned Department of Landscape Architecture in the University of Sheffield. After graduating he became a junior designer at West 8 in Rotterdam where he was exposed to a range of projects at both national and international level.  From here, he went on to set up his own office with Mart Reiling, designing public space for exercising, sports and recreation, based on crowd sourced app data. With this expertise he was approached by Ebben Nurseries to work part-time as their plant advisor to landscape architects, architects, urbanists and garden designers. He also consulted on the improvement of the TreeEbb, online tree selection tool, an important method to help in selecting trees. Thijs has now got a unique set of skills working in both design and plant production he can bring to light species that are not often used and could be essential in future proofing public and private landscapes. www.ebben.nl


Thomas Pakenham, who as Ireland’s tree expert, author and advocate for the preservation of trees, is better placed to discuss the importance and value of trees than anyone. He founded the Irish Tree Society in 1990 to promote the conservation, planting and maintenance of trees. Thomas has travelled the world to document extraordinary trees and is custodian of Tullynally Estate, Castlepollard, Co Westmeath where he is also the guardian of many of his own fine arboreal specimens. www.tullynallycastle.ie

Thomas’ presentation at the GLDA seminar, The Arboretum in Ireland, is an account of the evolution of tree collections in Irish gardens.

Gerald Mills is Associate Professor of Physical Geography, School of Geography at UCD. He completed his Bachelor’s and Master’s degrees at UCD and then went to the US in 1984 to complete a PhD at The Ohio State University. It was there that his interest focussed on climates, especially as they relate to cities. So, for the last 30 years he has worked on urban climates using modelling and observations to understand how urbanisation (the transformation of the landscape) alters the atmosphere especially, but also the hydrosphere and the biosphere. He continued this work when he returned to Ireland in 1997, back to UCD. Now, most of his focus is on helping to improve urban climate science globally, including establishing links with urban decision-makers. In Ireland, he has worked with others on the green infrastructure of Dublin and on mapping its trees. This research is ongoing and will form part of a project that will map Greenhouse gas emissions and sequestration across Ireland and especially in Dublin. He is co-author of Urban Climates, which is the major text on the field. He has played a number of roles in the International Association for Urban Climates (IUAC), including President. He is the recipient of the 2021 Luke Howard Award for lifetime contributions to the field of urban climatology. www.ucd.ie/gerald.mills


Henrik Sjöman is a Swedish researcher, botanist, plant hunter and scientific curator at the Gothenburg Botanic Garden, Sweden. His work work is mainly focusing on developing knowledge of site-adapted plant use for urban environments. How the capacity of different trees will vary in context to its urban environment and in delivering ecosystem services has become the prime driver in Henrik’s work and as such how to extend the knowledge of diversifying the urban treescape. Finding “plants of tomorrow” means to combine traditional plant hunting of less common species with research and evaluation; creating a diversified approach to a resilient urban forest. www.botaniska.se

Henrik’s presentation at the GLDA seminar addresses the need for greater diversification in the species of trees used in the urban landscape.


Watch LIVE from your Home or Office

– Watch recorded sessions all year round and catch-up ‘on demand’. (12 months access)

How to View

To purchase a ticket for the video on-demand archive please select a ticket below.  Please note we have different rates for members and non-members. Thank you.

Live streaming really is the next best thing to being there – and we look forward to welcoming you online for our Annual Seminar 2022.

FAQ – Frequently Asked Questions about Live Streaming the Seminar


1.  How long will video recordings be made available for?

Videos will be made available for viewing all year round.  (12 Months On-Demand Access)

2. When will recorded sessions be made available?

All recordings are now available for replay.   When you purchase online you will be sent login details within <2min

3.  Due to work commitments I won’t be able to watch live. Is there a catch-up service?

Yes – our video on-demand archive is now available, and you have access for 12 x months of further study

4.  What videos are available?

We have over 5hrs of content available.  All keynote talks, and Q&A sessions were recorded and are now available.
See the full list below.

Need help? Our dedicated support team will also be available via support@switchnewmedia.com if you have any technical queries.


All videos from the GLDA Seminar 2022 are now available. 

See the full list of speakers and talks below.  

Video Archive - Watch On-Demand

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