The purpose of this research is to study climatic and landscape characteristics of the Russian-Kazakh border region on the example of the Astrakhan region, affecting the formation of sustainable "green" buildings of ethno-cultural tourist clusters. In the course of the study, it was concluded that in order to reduce the influence of severe climatic factors of the region, to create comfortable environmental conditions and the microclimate of the premises, it is necessary to use landscaping of horizontal and vertical structural elements of the cluster building complex. The work carefully examined various types of vertical and horizontal landscaping (extensive and intensive). Based on the analysis of scientific research and expeditions to the region, the condition of existing green spaces in Astrakhan was carefully studied. Thus, as a result of the study, certain types of plants were identified and recommended for the technology of horizontal gardening of ethno-cultural tourist clusters in the Astrakhan region.