What is the purpose of using geogrid in landscape architecture?

Geogrid is a type of material utilized primarily for soil reinforcement and stabilization in various landscape applications, particularly when constructing retaining walls. Its primary purpose is to enhance the structural integrity of soil by distributing loads over a larger area and preventing soil erosion. In the context of retaining wall installations, geogrid helps to provide additional support, allowing for taller walls and steeper angles, while also reducing the risk of failure due to lateral pressures from soil or water.

While the other options mention valid concepts in landscape architecture, they do not accurately represent the specific function of geogrid. Increasing soil fertility pertains more to organic amendments and fertilizers rather than a physical support structure like geogrid. Although geogrid may be used in conjunction with retaining walls, it is not applicable to all retaining wall projects, as some may rely on different techniques or materials depending on site conditions. Additionally, a decorative gravel alternative and plant selection guidelines serve different purposes within landscape design and do not involve the structural reinforcement that geogrid provides.