The Yerevan botanical garden was founded in 1935, in the high part of the northeastern suburbs of the capital, in a semi-desert area of almost 80 hectares, almost devoid of trees, at an altitude of 1200-1250 m. The botanical garden is an institution of scientific, ecological, educational and recreational significance, the main purpose of which is to import highly ornamental and economically valuable plants from different plant geographical regions of the world, to create demonstration scientific collections, to discover their behavior in new ecological conditions investment.One of the most important and priority tasks of botanical gardens is the protection of rare and endangered species of the aboriginal flora in ex-situ conditions.Through the efforts of the garden staff, with the participation of famous Armenian botanists, plantations and alleys were established in 1940, which are still the basis of the compositional design of the garden. These are Tilia caucasica and cordata (Caucasian lime, Small-leaved lime), Quercus castaneifolia and robur (Chestnut-leaved oak, Common oak), Aesculus hippocastanum (Horse chestnut), Maclura pomifera (Osage orange), Pinus pallasiana (Crimean pine) alleys etc.In 1954-1970, the arboretum of the botanical garden was reconstructed. The ecological-geographical exposition plots of the arboreal flora of the Caucasus and Crimea, North America, Europe and Siberia, East Asia were created in an area of 16 hectares.Walking through the geographical exposition plots of the garden, you can meet the beautiful plants typical of the region, adapted to our climatic conditions.One of the current priorities of the botanical garden is the promotion of eco-educational knowledge and environmental education.