Clean air through natural moss filter and IoT

As the first biotech fine dust filter worldwide, the CityTree with integrated moss modules and innovative IoT technology ensures clean air in a demonstrable and noticeable way.

What you should know

The innovation

Clean air is essential for a high quality of life. But especially in cities, the air we breathe is often so polluted that it is harmful to our health. With the vision to change that, greencity solutions developed the CityTree. The CityTree cleans and cools the surrounding air through an automated irrigation and ventilation system. Ambient air is drawn in by the fans and flows through the vertical moss mats, cooling and cleaning the air. The filtered air is then released back into the environment through the CityTree. The integrated sensors control the moss supply and measure the performance and environmental data in real time.

The CityTree can be used multifunctionally as a combination of biofilter and street furniture: There are seating options around the CityTree so that you can optimally enjoy the fresh air. With built-in LCD screens or information boards, the CityTree can also serve as an information touchpoint. Further usage options can be offered by installing smart city technologies (e.g. charging stations for e-bikes).


of innovation

  • Clean and cool air by reducing fine dust and pollutants in the air

  • Increasing the quality of life and stay in cities

  • Additional usage options through smart technologies

We'll keep you up to date

Project Status: "Completed"

Contact person: Gernot Schröck

We shape the future

Support from Next-Incubator

As a subsidiary of Energie Steiermark, the next-incubator has in-depth know-how in the field of sustainability. It is precisely with this expertise that the next-incubator accompanies the start-up CityTree on the way to market maturity.