Matsumura Yoran has developed a technique for revivifying expired orchids. The undeadened flowers are being called "zombie orchids", and they have to be purchased from the company first. I don't know how you'd check whether you were returned your own orchids or just lookalikes.
Mokalus of Borg
PS - I also suspect these "zombies" have little to no taste for brains.
PPS - Still, there's probably not a better term to use.