Dominique Bayne from Emory Knoll Farms replied to my inquiry about the use of native plants on a green roof basically saying that eastern US natives do not usually do well on roofs, but putting some natives and pollinator plants in as accents around sedums is definitely doable. She specifically mentioned some eastern natives. Below, I’ve written the name as well as included the link to some information about the plant:

• Nodding Onion
  • http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=z580
• Nuttall’s rayless goldenrod
  • https://plants.usda.gov/core/profile?symbol=BINU2
• Butterfly weed
  • http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b490
• Eastern prickly pear
  • https://en.wikipedia.org/wiki/Opuntia_humifusa

Dominique also included three informative sheets about good sedum plants for green roofs. These will prove very helpful in choosing what plants can go on the green roof.