The guidelines, developed within the framework of the European JUSTNature project, aim to help planners, designers, and private landowners in Merano apply ecological functionality measures when designing or renovating private green spaces. The document explains the importance of ecological functionality for urban biodiversity, climate resilience, and quality of life. It details practical measures such as species-rich hedges, biodiverse lawns, green roofs, water bodies, and green walls, providing minimum requirements, design recommendations, and maintenance tips for each. The guidelines also include case studies and a scoring system to ensure that new projects meet the city’s ecological standards. The overall goal is to integrate high-quality greenery into urban planning, making Merano a model for sustainable, nature-based solutions in cities.