We are rooted in an age that seeks instant landscape effects but, from an environmental viewpoint, instant effects are not really what are wanted. Instead, a far more sustainable approach is required that involves greater richness and complexity evolving over time, directed in a knowledgeable way. Healthy cities need effective green-space networks and woodlands; not just to promote healthy living for city dwellers, but also to sustain wider biodiversity, to promote water and air quality, and to regulate climatic extremes. All this is well known, but is rarely reflected in landscape design. Rather than trying to freeze parks or gardens and making them static entities, they would be greatly enhanced if their long-time dynamic and structural changes are treated from a deep and active understanding. Moreover, rather than claiming that landscape architecture needs simplicity to be successful, it would be of great interest for the future to promote design concepts in which complexity plays a role. Considering the importance of both the outdrawn time-perspective and complexity in design, it is surprising how few books and articles are written focusing on planting design and vegetation in a city or urban rural fringe context, bridging the gap between architecture and an ecological-technical understanding.