The Urban Arborization Guide for the Metropolitan Area of Asunción (AMA) is an instrument of knowledge and innovation that aims to be a tool for achieving improved arborization in the city, thus helping to enhance the services provided by urban trees. The instrument was developed by the Ministry of Environment and Sustainable Development (MADES) with support from the United Nations Development Program (UNDP) and the Global Environment Facility (GEF). The tool generates strategies aimed at generating knowledge on the different stages of the tree planting process and presents recommendations on best practices, current regulations, a general description of the ecoregions and the natural characteristics of the Metropolitan Area of Asunción. It also includes thirty technical data sheets on native species recommended for tree planting that include particularities of each species in terms of their uses, ideal location in urban areas and the maintenance and care required.