The best green roof plants are shallow-rooted, alpine types which tolerate the dry, low-soil conditions of most roof gardens. Good choices include succulents such as sedum and stonecrop varieties; herbs such as thyme, chickweed, purslane and chives; and flowering perennials, including phlox, bellflower, thrift and ice plant.
About this Author
Melissa Jordan-Reilly has been a writer for 20 years, both as a newspaper reporter and as an editor of nonprofit newsletters. Among the publications in which she has published are, "The Winsted Journal," "Taconic" and "Compass Magazine." A graduate of the University of Connecticut, Jordan-Reilly also pursues sustainable agriculture techniques and tends a market garden at her Northwestern Connecticut home.