Water absorbing geocomposite
These solutions retain rainwater coming from infiltration. Everywhere where vegetation solutions are used for supporting retention, regardless of whether they are grass, trees, shrubs, plants used to create green roofs or green walls, the development of these plants can be supported by water absorbing geocomposite (GSW).
Check out the RAINMAN good practice examples:
Sabine Scharfe, Saxon State Office for Environment, Agriculture and Geology