Green roofs are currently seen as an ecologically sustainable practice, but in fact they can be unstable and vulnerable. Low-diversity green roofs can fail, because they are not resilient. Within prairies many specialized plant communities occur in hot, dry, windy places with thin, poorly developed soils. These diverse but stressed communities offer suitable local templates for assembling sustainable and ecologically robust extensive green roof plants, since growing conditions in these communities closely mimic those found on green roofs. As the nascent green roof movement of North America establishes, the opportunity arises to embed these new landscapes with ecological robustness.
MacDonagh, L. P., & Shanstrom, N. (2015). Assembling Prairie Biome Plants for Minnesota Green Roofs (pp. 257–283). https://doi.org/10.1007/978-3-319-14983-7_11