As green roofs gain popularity in North America, innovation is making roofs more ecologically productive and biologically diverse. One way to increase biodiversity is through selecting and planting local and regional native plant species in the roofs. Many native plants have been shown to survive and grow on green roofs. The question then becomes, what native plants can best establish and survive on green roofs? To answer this question, this study focuses on the native green roof plant establishment in the Great Lakes region. Through three separate studies: 1) creation of a native plant database for the Great Lakes green region; 2) analyzing native plant reseeding data, and 3) recording plant establishment methods. We hope to better understand how to design a biodiverse green roof that thrives in Northeast Ohio.