The Rosarium Uetersen is a rose garden in the city of Uetersen, Schleswig-Holstein, Germany.
The Rosarium is the oldest and largest rose garden in Northern Germany. Established in 1929 and originally designed by landscaping architect Berthold Thormählen, Mathias Tantau and Wilhelm Kordes, the rosarium covers at present over seven hectares more than 35,000 roses and 1020 various rose varieties in all gradations of color and aroma nuances presented.[1][2]