Green Ecolution is an open-source solution for the efficient irrigation of urban trees. Our software combines sensor data with intelligent route optimization, enabling targeted, resource-efficient deployment planning. Developed in collaboration with the City of Flensburg, and soon available for your municipality too.
Our system scientifically evaluates the sensor data and shows when irrigation is needed. The data is prepared so that it is easy to interpret and can be directly incorporated into deployment planning.
From soil moisture to an optimized irrigation route, in one continuous digital workflow.
Soil moisture sensors capture parameters such as soil moisture, temperature, and soil water tension at multiple depths (30/60/90 cm). The data is transmitted energy-efficiently via LoRaWAN.
A traffic-light system shows the current irrigation need on a map. Staff can see at a glance which green spaces need water. Time series enable detailed analyses.
Automated dispatch and route planning generates optimized irrigation routes, taking into account water capacity, vehicle size, and road restrictions.
This is how the readings travel from the tree to the optimized irrigation route through the Green Ecolution system.
Measures soil moisture at the tree
LoRaWAN transmission
Data processing & analysis
Visualization & route planning
Measures soil moisture at the tree
LoRaWAN transmission
Data processing & analysis
Visualization & route planning
Route optimisation in the backend is handled by Streamlet, a separate open source project that can also be used outside Green Ecolution.
Transparency, independence, and reusability: the cornerstones of our open-source strategy.
Licensed under the AGPL. Funded as part of DigitalHub.SH's "Offene Innovation" ("Open Innovation") state program.
No dependency on proprietary platforms. Municipalities retain control over their data and infrastructure. No vendor lock-in.
Modular extensions for municipality-specific adaptations without changing the core software. Import plugins for tree registries, CSV, and databases.
Open interfaces for integration into municipal IT landscapes. Connection to IoT hubs and open data portals.
Source code and documentation are publicly available on GitHub. Other municipalities can reuse and adapt the solution.
No license fees. The business model is based on services: hosting, customization, and sensor distribution. Regional value creation in Schleswig-Holstein.
The project is publicly viewable and aims to reduce water consumption for irrigation while enabling variable deployment planning.
Scalable open-source solution for municipalities that promotes further development and transparency
Individual deployment planning for more efficient irrigation
Targeted irrigation, less water consumption
The platform is deliberately designed to be usable in any municipality. Map areas, organizational structures, and irrigation regions are freely configurable.
Only open standards and open-source components are used. A cloud-native architecture based on Kubernetes enables multi-tenant, highly available operation. Additional municipalities can easily be added.
Sensor setup via QR code and GPS directly on-site at the tree
Fine-grained permission management for staff, service providers, and partner municipalities
Fully self-developed firmware for maximum control and adaptability
Connection to the open data portal of the state of Schleswig-Holstein
Expansion to flower beds, perennials, and parks beyond trees
···and much more in the pipeline
This is the software that was developed and set up for the City of Flensburg. It is primarily used by the Technisches Betriebszentrum Flensburg (the city's technical operations center).
There you can find all code repositories associated with the project, such as the backend and frontend of the software
A post about the research project was also published on the Hochschule Flensburg website.
Green Ecolution was mentioned not only on the website but also on Instagram.
Green Ecolution was presented and funded as one of the open-source projects as part of DigitalHub.SH 2025.
The City of Flensburg also reported on Green Ecolution and its significance for sustainable city management.
The public demo instance, directly in the browser and without installation.
Do you have questions, feedback, or a request? We welcome your message and will get back to you as soon as possible.
