How do the CityTrees work?

The moss absorbs air pollutants such as particulate matter (PM) and nitrogen oxides (NOx) and emits clean air.  The moss acts as a filter to ‘trap’ and ‘eat’ fine dust making it a sustainable and regenerative fine dust filter.

Scientific studies by the Leibniz Institute for Tropospheric Research have shown that moss mats clean about 80% of fine dust from the air.

The trees contain different mosses with fully automated water and nutrient provision based on a unique Internet of Things process controlling technology. Air filtering performance is regularly measured using air quality sensors and the plants’ requirements are measured in real-time.

The CityTrees were placed at the site-specific locations following a careful assessment by the air quality team. The locations reflect areas where they will have the greatest benefit.