The Catalogue of Trees of Local Interest includes the most valuable specimens of trees, palms and shrubs of the streets and gardens of Barcelona, wether because of their age, peculiarity, aesthetic qualities or historical value. Adding them to this catalog ensures their preservation, since speciments can't be eliminated or affected under no circumstances.
This catalog is the result of Regulations on Protection of the Environment and Quality of Life, which were approved by the City Council in 1983. Classified species are chosen on the basis of assessment parameters which analyse those interesting specimens or plantations located in the city.
When including a tree in this catalog, the main elements to take into account are age, size, history and aesthetic qualities.