Advancing Knowledge
Research at the Royal Gardens
Research Focus: Plants for Green Roof Ecosystems
At The Royal Gardening Society of Norway, one area of particular interest is the selection of plants that perform well in green roof environments.
Green roofs are exposed to unique conditions such as wind, frost, drought, shallow substrates, and strong sun exposure. Identifying plant species that can thrive under these conditions is essential for creating resilient and biodiverse rooftop ecosystems.Through practical experimentation and observation, we have explored the performance of several plant groups commonly used on ecological roofs, including mosses, sedums, native wildflowers, and drought-resistant perennials. These plants not only provide visual appeal but also support pollinators, improve water retention, and contribute to urban biodiversity.Our observations aim to identify plant combinations that create stable, low-maintenance roof systems capable of supporting both environmental performance and habitat creation. Insights from these experiments help inform our educational work and sustainable gardening initiatives.
Why Green Roofs Matter
Green roofs represent an important opportunity to introduce biodiversity into urban environments. By carefully selecting plant species that are both resilient and pollinator-friendly, rooftops can become valuable ecological spaces that contribute to healthier cities and more sustainable landscapes.
Beyond their ecological benefits, green roofs also help regulate temperature, improve rainwater management, and create new habitats for insects and birds within densely built environments.
Mosses and Resilient Plant Communities
Mosses are among the most resilient plant groups found in ecological roof systems. As some of the earliest plants to transition from water to land, they play an important role in water retention, soil formation, and micro-habitat creation.
In green roof environments, mosses can help stabilize surfaces, retain moisture, and support small invertebrates. When combined with sedums and other drought-resistant species, they can contribute to diverse and stable plant communities adapted to rooftop conditions.
Collaborate with Us
We welcome collaborations with researchers, academic institutions, and organizations that share our interest in sustainable gardening, biodiversity, and ecological landscaping.
If you are interested in partnering with us or learning more about our work, please contact research@royalgardens.no
