The Botanischer Garten Düsseldorf, also known as the Botanischer Garten der Heinrich-Heine-Universität Düsseldorf and the Botanischer Garten der Universität Düsseldorf, is a botanical garden of 8 hectares maintained by the University of Düsseldorf. It is located at Universitätsstraße 1, Düsseldorf, North Rhine-Westphalia, Germany, and open daily in the warmer months; admission is free. The garden was established in 1974 and currently contains about 6000 species, with a focus on plants of temperate climates. Its outdoor gardens are organized as follows: