A small wetland nature reserve in the Untermainebene northwest of Dieburg, protecting reedbeds, sedge stands, and endangered meadow species.
Das große Hörmes bei Dieburg
Das große Hörmes bei Dieburg is a small nature reserve (Naturschutzgebiet) in the Untermainebene lowlands of southern Hesse, in central Germany. The protected area lies northwest of the town of Dieburg in the Darmstadt-Dieburg district, just north of the country road leading toward Messel, and follows the course of the Hörmesgraben, a small tributary of the Gersprenz river.
The reserve protects a wetland complex of about 13.6 hectares, made up of reedbeds, sedge stands, moist meadows, traditional litter meadows, and mown grassland. These habitats shelter several Red List plant species and a community of meadow-breeding birds that depend on open, undisturbed wet habitat. The area has been officially protected since February 1985 and is part of the broader network of small nature reserves that characterize the Darmstadt-Dieburg district.
Although modest in size, Das große Hörmes plays a meaningful local role by preserving a remnant of the wetland landscape that once dominated the Gersprenz lowlands, contributing to habitat connectivity and to the survival of characteristic marsh and meadow species in an otherwise heavily cultivated rural setting.