Based on the publications analysis and our own research, the ecological principles are considered, which should form the basis of long-term plans for planting of greenery in settlements in Baikal Siberia and take into account important regional features. The research was conducted using methods of information collection and analysis, which include comparison and systematization of data on the indicated problem. The current general urban plans of towns, which are in open access, as well as urban planning standards for the allocation of functional zones of settlements were studied. The influence of the urban environment on the existence of plants is examined. The problem of invasion of cultivated species as a result of unreasoned planting of greenery and the need to use indigenous species for amenity planting, especially those that are rare and in need of protection, were identified. The conclusion was made that when planting of greenery, one should take into account the florogenetic and phytocoenotic properties of the vegetation cover of the studied territory. Environmental principles of planting of greenery in settlements of Baikal Siberia are proposed as conceptual. Keywords: amenity planting, urban infrastructure, Cisbaikalia, Transbaikalia.