Green roof substrates are the foundation of successful living roofs, yet they are often misunderstood. This article explores how evolving guidelines, industry-led innovations, and ongoing research are reshaping green roof growing media, revealing why substrate choice is critical to plant performance, long-term durability, and the future expansion of green roofs in diverse urban climates.

Discover how 12 acres of native and sedum green roofs at Washington D.C.'s Munro Coast Guard Building exemplify sustainability. Learn about stormwater management, biodiversity, and economic benefits of green roofs thriving over a decade. Insightful for urban designers and policymakers.