I would like to use native plants on my my green roof project. Which varieties are appropriate?
Some native North American plants are appropriate for use on green roofs, but they often bring extra costs. For example, in the eastern US, there are not many choices of native plants which would be expected to thrive on a green roof without additional requirements such as irrigation. Intensive green roofs might allow for more use of natives; if extra soil, shade, and irrigation are allowed for. But for extensive green roofs there are few choices of native plants which could reasonably be expected to thrive.
