Green roofs and their properties
| Cross-section substrate layer [cm] | additional weight [kg/m²] | maintenance | Accessibility | Type of plants | |
| Extensive | 6-15 | 30-150 | Minimal | No | Sedum, herbs … |
| Semi-intensive | 15-30 | 150-400 | Yes | Yes | Flowers, lawn, small shrubs,herbs |
| Intensive | > 30 | >400 | Yes | Yes | Any plant choice* |
* Stipulated plants such as bamboo are to be avoided on green roofs because of their aggressive nature towards roots. For a full list of prohibitions, we refer to Krupka, Bernd. Dachbegrünung – Pflanzen und vegetationsanwendung an bauwerken. Stuttgart, Ulmer, . 2000
