High Level Talks at Landscape Below Ground IV

GreenBlue Urban were pleased to sponsor, exhibit, and speak at the fourth Landscape Below Ground Conference hosted in Lisle, Illinois. This industry-leading event is held every 10 years, and although they are shortening this to every five years, it is an important event for GreenBlue Urban to attend. Attendees came from all over the world – and researchers from Australia, China, Netherlands, etc as well as from across North America presented on a range of specialist areas with the common theme of tree root development below ground.

“This was probably the most relevant conference in the world for us to be at”

Dean Bowie, CEO of GreenBlue Urban

In addition to our sponsorship and expo stand that to displayed our best practice systems for tree pit design, and also presented about pavement support systems for urban tree growth and discussed our nearly 20 year history of the topic, as the developer of the world’s first soil cell for urban tree planting. Since GreenBlue Urban’s CEO Dean Bowie has more experience in the field of soil cells than anyone else in the world, it was good to share some of this and get the message out there that the most important thing below ground for urban trees is uncompacted soil, in enough volume, within a protective structure!

The presentation was well received, and Dr Gary Watson (who chaired the event) was very positive on our contribution to this highly specialized program.

Covering many aspects including Research Tools and Methodology offered through partners in the industry, we were able to share results of ongoing tests comparing planting solutions. The above displays more recent evidence at Hadlow College and of course the joint trial in London Blackfrairs Road. Main Street in Cambridge, Ontario also provided an in-situ tree pit trial site, as some of the trees on this street were planted in soil cells, while others were planted in structural soil. You can see the results here.

We couldn’t leave Chicago without highlighting the benefits of LID / SUD tree pits allowing water attenuation and trees to thrive! Discover more on Goldhawk Road.

Thanks to everyone who supported this event, and stay tuned for the paper being published in book form by the International Society of Arboriculture.

For decades, the way we designed drainage in our towns and cities followed a simple principle: get water away from

A ‘Super El Niño’ is set to make 2027 one of the hottest years on record, with temperatures potentially exceeding

What stood out at UKREiiF 2026, across a range of sessions and conversations, was how often different speakers and disciplines

Raingardens are designed to manage rainfall where it lands. Instead of sending water straight into underground pipes, they slow, store

Urban tree populations in cities around the world are under pressure. Despite the clear benefits trees bring, including cooling streets,

When the phrase root girdling appears in a specification meeting or planning discussion, it tends to stop the conversation cold.

One of the biggest challenges facing the urban greening industry today is how we respond effectively to the accelerating climate

Planting a tree is often framed as an act of optimism, a gesture toward a greener, more hopeful future. But

Sustainable Drainage Systems (SuDS) are most effective when they are treated as a core part of urban design rather than

Designing urban landscapes that successfully support both healthy tree growth and the structural needs of pavements, pathways, and vehicle areas