Currently, extensive roofs are greened with a mixture of sedum shoots and herbs from various origins on standardized substrates of volcanic tuff, crushed brick, and similar materials. Using native and, in some cases, protected species from the semi-dry grasslands of the inner Alpine region on suitable substrates from the region can strengthen native flora and associated fauna in both urban and rural areas. This project will investigate the application of seeds collected from existing semi-dry grassland areas in the region. One variant involves applying the seeds with additional meadow hay, which, compared to applying pure seeds, could result in a greater potential for dispersal of diaspores at the new location (roof surface).