Phyto-geographic Department of Southern America is cultivated on the terraced slope protected from wind and inclined towards the sea. It occupies the area of 0,71 hectare. The department was cultivated from the day of establishment of the garden on the nursery site for introduction of current plants and was named Chile Phyto-geographic Department. Later the department was filled with exotic plants from Argentina, Peru and Brazil. It was moved in the lower side of Administrative Building, in the adjacent territory of Upper Seaside Park and was called as Southern American Phyto-geographic Department. This department has never been distinguished with wide variety of species; some aliens of South American Origin got well adapted to our conditions and were introduced not only in Ajara seaside, but also in western Georgia (feijoa, butia, abutilon, passion flower, etc).
By the data of 2016, Phyto-geographic Department of Southern America was represented with 18 families, 20 sub-families and 22 species. It is noteworthy that from this selection of plants, Podocarpus nubigenus, Araucaria angustifolia and Araucaria araucana are included in the list of International Union for Conservation of Nature (IUCN).