Salis and colleagues recast municipal greenery as a continuously monitored operational system. Their iconic proposition is the Smart Green City platform in Campobasso, where tree sensors, soil measurements, weather data, pollution indicators, drones and satellites converge in a cloud-based decision-support environment. The theoretical contribution is an infrastructural conception of urban nature: green space is not a finished amenity but a living asset whose health depends on recurrent sensing, interpretation and maintenance. Methodologically, interoperable Internet of Things devices, predictive models, inventories and threshold alerts coordinate irrigation and tree management in real time. The conceptual operation is feedback governance, transforming ecological change into administratively actionable signals. The wider bridge reaches smart-city studies, urban forestry, cybernetic planning and maintenance theory. The case also clarifies the politics of data-driven stewardship: sensorisation can improve responsiveness and resource efficiency, but it relocates expertise into platforms whose standards, ownership, interoperability and failure modes shape how municipal ecologies are perceived and cared for.