Blue-green resources are key to sustainable urban development. By integrating vegetation, recreational spaces, water networks, and natural ecological processes, cities can enhance biodiversity and strengthen climate resilience. Urban forests reduce runoff, prevent soil erosion, and ease pressure on drainage systems. This episode highlights how government departments apply blue-green infrastructure, optimizing vegetation and water systems to improve ecological quality and maintain urban environmental balance.

This episode begins by examining Hong Kong’s natural soil structure and the challenges it poses for urban greening. We explore how government departments develop greening layouts and proper tree-planting methods suited to local conditions, covering species selection, soil improvement and ongoing maintenance. The programme also looks at future planting research, including studies to enhance tree resilience and strengthen sustainable greening strategies. In addition, we introduce the latest roadside planting guidelines aimed at improving safety and creating more pleasant streetscapes. Together, these efforts embody the principles of “planting with insight, adapting to the environment and putting people first,” supporting a more liveable, sustainable Hong Kong.