Tree Pit Design
Planting trees in urban spaces is becoming more important as development and regeneration takes place. Often soft landscaping is disappointing; inappropriate species are selected, planting occurs too close together or too far apart, after care is an afterthought rather than being an integral part of the process. We believe that tree planting is an essential part of development which needs careful thought from the outset. We make recommendations based on:
- the space available,
- how it is used and by whom,
- what species will be best suited to the environment,
- what its mature size and shape will be,
- an aftercare programme and
- an understanding of future maintenance and management issues.
As trees are so important in urban areas, finding a way to incorporate them in relatively small spaces but with adequate space and access to essential levels of nutrients, air and water is essential. Without tree pits, often urban trees are short term – they do not grow to maturity and their survival rates can be low. Tree pits can provide sufficient space for a tree to grow to maturity whilst not encroaching upon usable space above ground.
We have worked on a number of sites where tree pits have been constructed to allow large tree stock to be planted, with the potential for them to grow to maturity successfully.
An urban redevelopment scheme in Southampton installed tree pits beneath a pedestrian area as part of a bus interchange scheme. The pit was created sufficiently large enough to provide the trees with good soil depth to enable them to grow to maturity and to access the nutrients, air and water they require. As the pits sit below ground level, the area available for pedestrian use is not restricted. The trees selected are suitable for the location and use of space and are large enough to create an instant maturity and aesthetic improvement to an otherwise urban landscape by the University.