Sint Janplein, Boekel (2004): root guidance prevents root heave for over 20 years

Town square with plane trees in the public space sustainably protected against paving damage

At Sint Janplein in Boekel, the Municipality of Boekel applied root guidance panels from GreenMax in 2004 during the planting of plane trees to prevent root heave in paving. More than 20 years later, this solution has proven successful: the trees form a green, shaded oasis in the centre, without damage to the paving. The project demonstrates the long-term effectiveness of root guidance in urban tree planting.

Project details

  • Location: Laakse Tuinen, Vathorst (The Netherlands)
  • Solutions: Tree Root Guiding (TRG), water reservoirs & AirMax
  • Year: 2017
  • Number of years free from root damage: 9
  • Tree species: Ulmus & Tilia
  • Public authority: Municipality: Amersfoort

Preventing root heave in new planting

De Laakse Tuinen is a new residential area in Vathorst. The location borders the Laak river, the polder and the to-be-developed Westerpark. Wide green avenues and attractive canals connect the neighbourhood to the water and give it a calm, open character. Small boats are moored along the banks, and large trees complete the picture between the embankments. During the development of the new residential area, careful consideration was given from the outset to preventing root heave in the future. The tree species can cause damage to the paving if no measures are taken.

Root guidance and irrigation with water reservoirs

In 2017, the Tree Root Guiding (TRG) root guidance system was applied to prevent tree roots from lifting the paving. This system directs young roots downwards in a controlled manner, allowing them to continue growing at a safe depth without causing damage. In addition, the trees were equipped with GreenMax water reservoirs, ensuring they received the right amount of water during the first years for a healthy start and strong root development. The AirMax aeration system was also applied to provide the trees with additional oxygen deeper in the tree pit.

Future-proof public space without root heave

The Municipality of Amersfoort made a smart, future-proof choice in 2017. Nearly 10 years later, there is still no sign of root heave and the trees are developing well. As a result, De Laakse Tuinen is beautifully green, while cyclists, pedestrians and playing children do not have to worry about tripping hazards!

Project photos

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