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.

This research explores saffron’s potential as a high-value, sustainable crop for Kentucky by comparing multiple growing systems and biofungicide treatments. By examining how different environments influence yield and plant health, the study offers new insights into optimizing saffron production and expanding its viability in regional agriculture.