That’s all. My mother in law is reading a book that refers to these. Google-fu is not helping. Any ideas?
Do you mean the art installation “Enamel Garden” or “Jardin d’Email” by Jean Dubuffet at the Kroller-Muller Museum in the Netherlands?
Nope, it’s apparently a style of garden.
Can we get some context? Say, the name and topic of the book and a quote with the term in use?