Sedum (Sedum erythrostictum) 'Frosty Morn' is not patented. Plant hunter Barry Yinger discovered the plant in Japan and introduced it to the United States. He marketed Frosty Morn for more than a year without filing a patent application, so its patent eligibility has expired.
About this Author
A freelance writer, Judy Wolfe has owned Prose for the Pros, a freelance writing business, since 2006. She's been an inveterate traveler since 1961 and draws on her travel experiences to provide articles for such websites as Chincoteague Island Vacations and Berlin Dude. Wolfe holds a Bachelor of Arts in literature from California State University at Pomona.