The Municipality of Warsaw in Poland decided in 2020 to carry out a monetary valuation of ecosystem services provided by trees in Wola, one of its districts. The Municipality commissioned the valuation to the Warsaw University of Life Sciences which collaborated with the University of Warsaw. It was a three month project which resulted in the examination of approximately 1336 trees. The valuation was a starting point to inform the broader discourse on the ecosystem services provided by trees. As a result of the action, many residents learned about ecosystem services for the first time and appreciated the role of trees in their city. Furthermore, the project highlighted the need for another survey that would enable conclusions to be drawn for the whole of Warsaw and allow significant changes to be implemented in the city regarding planning decisions.