Martin Roth. “from may to june 2012 i grew grass on rugs in a castle”.

” …This state of in-between is central to his Persian rugs on which grass grows “on the ‘dust of history’.” They were inspired by philosopher Michel Foucault’s examination of “heterotopias,” spaces that both exist and do not exist. Since the designs of carpets were first patterned after gardens, Foucault wrote that “the garden is a rug onto which the whole world comes to enact its symbolic perfection, and the rug is a sort of garden that can move across space.”

More here and here.