Yes, sedum works very well for green roof applications. Rotunda Roundhouses explains, “The sedum plants on green roofs can capture airborne pollutants and capture CO2. The temperature moderating effects of green roofs can reduce demand on power plants, and potentially decrease the amount of CO2 and other polluting by-products being released into the air.” So, a sedum green roof is an awesome option if you want to do your part to fight climate change. The same builder lists some additional benefits a sedum roof can offer, including a reduction in storm-water run-off, thermal insulation, advantages for pollinators, and aesthetic beauty.